A091181 - OEIS

%I #8 Aug 06 2021 07:06:11

%S 4,6,8,11,12,19,29,31,34,37,42,46,47,63,68,75,80,93,95,100,105,106,

%T 115,133,136,138,141,145,151,157,159,167,169,175,187,197,210,211,217,

%U 221,222,232,233,247,257,263,274,275,279,306,308,327,335,337,339,355,365

%N A091180 indexed by A000040.

%F a(n) = k such that A000040(k) = A091180(n).

%F a(n) = A000720(A091180(n)). - _Michel Marcus_, Aug 06 2021

%Y Cf. A088878, A091179, A091180.

%K nonn,easy

%O 1,1

%A _Ray Chandler_, Dec 27 2003

%E Offset changed to 1 by _Jinyuan Wang_, Aug 06 2021