A043970 - OEIS

%I #9 Aug 26 2021 15:29:15

%S 13,37,94,125,175,199,256,280,341,361,418,442,499,523,580,604,661,685,

%T 742,766,823,854,904,928,985,1009,1133,1147,1171,1228,1252,1309,1333,

%U 1390,1414,1471,1495,1552,1583,1633,1657,1714

%N Numbers k such that 1 and 4 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_