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%I #10 Feb 13 2020 02:54:29
%S 1,1,2,16,1957,9864101,3554627472076,138879579704209680022,
%T 828772446866981044847857913441,
%U 1011182700521015817607065606491025592595137,325166909258549255903203528672831330994640286650913570126
%N Number of graphs with n nodes. Nodes and edges labeled each from their own label set.
%H Andrew Howroyd, <a href="/A091479/b091479.txt">Table of n, a(n) for n = 0..30</a>
%F a(n) = A000522(A000217(n-1)). - _Gerald McGarvey_, Nov 17 2007
%o (PARI) a(n)={binomial(n,2)!*sum(k=0, binomial(n,2), 1/k!)} \\ _Andrew Howroyd_, Feb 12 2020
%Y Row sums of A091478.
%Y Cf. A006125.
%Y Cf. A000217, A000522.
%K nonn
%O 0,3
%A _Christian G. Bower_, Jan 13 2004
%E a(0)=1 prepended and terms a(10) and beyond from _Andrew Howroyd_, Feb 12 2020
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