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Search: id:A044734
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A044734 Numbers n such that string 2,1 occurs in the base 10 representation of n but not of n+1. +0
1
21, 121, 219, 221, 321, 421, 521, 621, 721, 821, 921, 1021, 1121, 1219, 1221, 1321, 1421, 1521, 1621, 1721, 1821, 1921, 2021, 2199, 2219, 2221, 2321, 2421, 2521, 2621, 2721, 2821, 2921, 3021, 3121, 3219, 3221, 3321, 3421 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A079417 A074088 A044353 this_sequence A117388 A053052 A002299

Adjacent sequences: A044731 A044732 A044733 this_sequence A044735 A044736 A044737

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified September 7 12:28 EDT 2008. Contains 143483 sequences.

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