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Search: id:A132363
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| A132363 |
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Least natural number in English which requires exactly n characters to spell including spaces and hyphens, or 0 if no such number. The inverse of A052360. |
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+0
1
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| 1, 0, 3, 11, 15, 13, 17, 21, 24, 23, 73, 3000, 101, 104, 103, 111, 115, 113, 117, 121, 124, 123, 173, 323, 373, 1101, 1104, 1103, 1111, 1115, 1113, 1117, 1121, 1124, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13323, 13373, 17373, 21373, 23323, 23373, 73373
(list; graph; listen)
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OFFSET
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3,3
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COMMENT
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This is to A052360 as A134629 is to A005589. Also assumes no 'and' is used to spell integers. This deviates from A134629 at a(10). "twenty-one" is the smallest integer whose standard English name has a hyphen. "one hundred" is the smallest integer whose standard English name has a space. "one hundred twenty-one" is the smallest integer whose standard English name has a space and a hyphen.
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LINKS
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Eric Weisstein's World of Mathematics, Number
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EXAMPLE
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a(3) = 1 because "one" has 3 characters.
a(4) = 0 because "zero" has 4 characters.
a(5) = 3 because "three" has 5 characters.
a(6) = 11 because "eleven" has 6 characters.
a(7) = 15 because "fifteen" has 7 characters.
a(8) = 13 because "thirteen" has 8 characters.
a(9) = 17 because "seventeen" has 9 characters.
a(10) = 21 because "twenty-one" has 10 characters.
a(11) = 24 because "twenty-four" has 11 characters.
a(12) = 23 because "twenty-three" has 12 characters.
a(13) = 73 because "seventy-three" has 13 characters.
a(14) = 3000 because "three thousand" has 14 characters.
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CROSSREFS
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Cf. A005589, A052360, A119960, A129774, A134629.
Sequence in context: A115214 A143029 A022123 this_sequence A134629 A030715 A056247
Adjacent sequences: A132360 A132361 A132362 this_sequence A132364 A132365 A132366
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KEYWORD
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easy,nonn,word
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 08 2007
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EXTENSIONS
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Corrected and extended by Martin Fuller (martin_n_fuller(AT)btinternet.com), Nov 24 2007
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