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A043977 Numbers k such that 2 and 5 occur juxtaposed in the base-9 representation of k but not of k+1. 0

%I #9 Aug 27 2021 01:48:27

%S 23,47,104,128,185,215,266,290,347,371,431,452,509,533,590,614,671,

%T 695,752,776,833,857,914,944,995,1019,1076,1100,1160,1181,1238,1262,

%U 1319,1343,1400,1424,1481,1505,1562,1586,1643,1673

%N Numbers k such that 2 and 5 occur juxtaposed in the base-9 representation of k but not of k+1.

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)