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Search: id:A166713
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| A166713 |
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Alliterative-digit numbers: Positive integers n such that the English names of the decimal digits of n begin with the same letter; ignore single-digit numbers. |
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+0
1
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| 11, 22, 23, 32, 33, 44, 45, 54, 55, 66, 67, 76, 77, 88, 99, 111, 222, 223, 232, 233, 322, 323, 332, 333, 444, 445, 454, 455, 544, 545, 554, 555, 666, 667, 676, 677, 766, 767, 776, 777, 888, 999, 1111, 2222, 2223, 2232, 2233, 2322, 2323, 2332, 2333, 3222, 3223
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The multi-digit repdigits (A014181) are a subsequence. No term contains the digit 0 (zero). All terms containing digits 1 (one), 8 (eight), or 9 (nine) are also terms of A014181. Any term not mentioned above is a string of 2's (twos) and 3's (threes) only (a multi-digit term of A032810), 4's (fours) and 5's (fives) only, or 6's (sixes) and 7's (sevens) only.
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EXAMPLE
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454 is a term as digits "four", "five", "four" each begin with the letter "f".
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CROSSREFS
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Cf. A146755, A014181, A032810.
Sequence in context: A040110 A140452 A048136 this_sequence A095779 A062055 A066500
Adjacent sequences: A166710 A166711 A166712 this_sequence A166714 A166715 A166716
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KEYWORD
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base,easy,nonn,word
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AUTHOR
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Rick L. Shepherd (rshepherd2(AT)hotmail.com), Oct 19 2009
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