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A158265
G.f.: A(x) = exp( Sum_{n>=1} 2*sigma(n,n+1)*x^n/n ).
+0
1
1, 2, 11, 74, 697, 8002, 115158, 1949640, 38662510, 872245634, 22150393253, 623661939852, 19296665400632, 650198159192554, 23700604926216759, 928939297013294294, 38956230043045053042, 1740248411222193973416
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Maintained by
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
AT&T Labs Research
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