642941

Appears in sequences

• L.g.f.: G(x) = x*exp( Sum_{n>=1} G(G(x)^n)/n ) where G(x) = x*exp(Sum_{n>=1} a(n)*x^n/n).at n=7A179326
• Coefficients in the expansion Product_{ n>=1 } (1-q^(2n-1))^2/(1-q^(2n))^2.at n=40A274621
• a(n) = 16*n^3 - 36*n^2 + 30*n - 9.at n=34A341043