%I #37 Oct 30 2017 13:25:47
%S 1,1,11,223,12193,1548841,501460531,355752425239,558112176198305,
%T 2023318561014654769,15928875457207423721731,
%U 268023268481704204728199711,10084410400965244525857478169665,817174553170437003290060071895273113
%N a(n) = n! * [x^n] exp(Sum_{k=1..n} sigma_n(k) * x^k).
%H Seiichi Manyama, <a href="/A294388/b294388.txt">Table of n, a(n) for n = 0..75</a>
%Y Main diagonal of A294296.
%Y Cf. A252782.
%K nonn
%O 0,3
%A _Seiichi Manyama_, Oct 30 2017