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A089531 indexed by A000040.
4

%I #3 Mar 30 2012 17:29:13

%S 4,6,7,10,12,13,18,24,25,29,33,35,42,45,50,55,59,60,66,68,70,77,78,79,

%T 87,88,89,100,102,104,113,123,126,127,135,136,139,142,152,158,159,165,

%U 169,172,176,184,187,189,197,199,201,203,209,211,216,234,237,244,251

%N A089531 indexed by A000040.

%F a(n)=k such that A089531(n)=A000040(k).

%Y Cf. A023204, A089530, A089531.

%K nonn

%O 1,1

%A _Ray Chandler_, Nov 07 2003