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A044270 Numbers n such that string 2,1 occurs in the base 9 representation of n but not of n-1. 0
19, 100, 171, 181, 262, 343, 424, 505, 586, 667, 748, 829, 900, 910, 991, 1072, 1153, 1234, 1315, 1396, 1477, 1539, 1629, 1639, 1720, 1801, 1882, 1963, 2044, 2125, 2206, 2287, 2358, 2368, 2449, 2530, 2611, 2692, 2773, 2854 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Sequence in context: A129701 A221746 A241236 * A044651 A287303 A142216

Adjacent sequences:  A044267 A044268 A044269 * A044271 A044272 A044273

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 29 02:35 EST 2020. Contains 332353 sequences. (Running on oeis4.)