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Search: id:A119252
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| A119252 |
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Odd digits in decreasing order. |
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+0
4
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| 1, 3, 5, 7, 9, 31, 51, 53, 71, 73, 75, 91, 93, 95, 97, 531, 731, 751, 753, 931, 951, 953, 971, 973, 975, 7531, 9531, 9731, 9751, 9753, 97531
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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There is a full list of 31 such numbers. Cf. A119253 Odd digits in increasing order, A009993 Digits in increasing order, A009995 Digits in decreasing order.
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MATHEMATICA
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Sort@Flatten@Table[FromDigits/@Subsets[Range[9, 1, -2], {n}], {n, 1, 5}]
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CROSSREFS
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Cf. A009993, A009995, A119253.
Sequence in context: A053681 A135773 A131668 this_sequence A141708 A081434 A007632
Adjacent sequences: A119249 A119250 A119251 this_sequence A119253 A119254 A119255
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KEYWORD
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base,fini,full,nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), May 10 2006
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