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E.g.f.: exp( sum(n>=1, x^(n!) / n ) ).
2

%I #9 Jun 04 2016 06:50:17

%S 1,1,2,4,10,26,316,1912,14204,83260,513496,2918576,43605112,442060984,

%T 5396258960,51589877536,502620599056,4387660231952,77691034349344,

%U 1065687761143360,17601265218632096,230878891157853856,3055183837594858432,35865234134641395584,155845649043266241280960

%N E.g.f.: exp( sum(n>=1, x^(n!) / n ) ).

%H Alois P. Heinz, <a href="/A272602/b272602.txt">Table of n, a(n) for n = 0..452</a>

%F E.g.f.: exp( sum(n>=1, x^(n!) / n ) ).

%o (PARI) N=66;x='x+O('x^N); Vec(serlaplace(exp(sum(n=1,10,x^(n!)/n))))

%Y Cf. A272603 (e.g.f.: exp( sum(n>=1, x^(n!) / n! ) ) ).

%K nonn

%O 0,3

%A _Joerg Arndt_, May 29 2016