A174891 - OEIS

%I #8 Feb 06 2023 11:45:40

%S 1,4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,32,33,34,35,36,

%T 38,39,40,44,45,46,48,49,50,51,52,54,55,56,57,58,60,62,63,64,65,68,69,

%U 72,74,75,76,77

%N Row indices for nonzero elements in first column of A174888.

%C Compare with nonprimes A018252. 30 is not a member of this sequence. Neither is 42.

%Y Cf. A174889, A174888, A018252.

%K nonn

%O 1,2

%A _Mats Granvik_, Apr 01 2010