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Search: id:A044431
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A044431 Numbers n such that string 9,9 occurs in the base 10 representation of n but not of n-1. +0
1
99, 199, 299, 399, 499, 599, 699, 799, 899, 990, 1099, 1199, 1299, 1399, 1499, 1599, 1699, 1799, 1899, 1990, 2099, 2199, 2299, 2399, 2499, 2599, 2699, 2799, 2899, 2990, 3099, 3199, 3299, 3399, 3499, 3599, 3699, 3799, 3899 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Sequence in context: A033674 A043526 A031500 this_sequence A044812 A125820 A008902

Adjacent sequences: A044428 A044429 A044430 this_sequence A044432 A044433 A044434

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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