%I #19 Dec 20 2021 02:36:57
%S 1,2,6,11,15,17,18,20,21,22,23,25,26,29,33,40,43,45,48,49,50,52,54,57,
%T 58,60,62,66,70,73,74,75,77,78,79,80,81,86,88,90,91,94,95,98,101,103,
%U 107,108,110,112,115,117,118,120,123,124,126,127,128,129,131,136,138,139,140,143,144,145,146
%N Numbers k such that A035014(k) begins with a 4.
%C A023402(n) = 4 for numbers in the sequence, 3 for numbers not in the sequence.
%e 3 is not in the sequence because A035014(3) begins with a 3.
%Y Cf. A035014, A023402, A241687 (complement).
%K nonn,base
%O 1,2
%A _J. Lowell_, Apr 26 2014
%E More terms from _R. J. Mathar_, May 02 2014
|