**L.g.f.: A(x) = log( 1 + Sum_{n>=1} (n-1)!*x^n ) = Sum_{n>=1} a(n)*x^n/n.**

*1, 1, 4, 17, 91, 574, 4173, 34353, 316012, 3214181, 35832567, 434643518*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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