E.g.f. A(x) satisfies: A(x)^2 = -x*log(1-A(x)) where A(x) = Sum_{n>=1} a(n)*x^n/n!^2.
A226057
E.g.f. A(x) satisfies: A(x)^2 = -x*log(1-A(x)) where A(x) = Sum_{n>=1} a(n)*x^n/n!^2.
Terms
- a(0) =1a(1) =2a(2) =21a(3) =504a(4) =21380a(5) =1405800a(6) =132139140a(7) =16801276800
External references
- oeis: A226057