A044725 - OEIS

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A044725

Numbers n such that string 1,2 occurs in the base 10 representation of n but not of n+1.

12, 112, 129, 212, 312, 412, 512, 612, 712, 812, 912, 1012, 1112, 1129, 1299, 1312, 1412, 1512, 1612, 1712, 1812, 1912, 2012, 2112, 2129, 2212, 2312, 2412, 2512, 2612, 2712, 2812, 2912, 3012, 3112, 3129, 3212, 3312, 3412

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

CROSSREFS

Sequence in context: A044344 A130838 A225189 * A265948 A016152 A089700

Adjacent sequences: A044722 A044723 A044724 * A044726 A044727 A044728

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved