a(n) = [x^n] Product_{k>=1} 1/(1 - n*x^(k^2)).

A302836

a(n) = [x^n] Product_{k>=1} 1/(1 - n*x^(k^2)).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =27a(4) =260a(5) =3150a(6) =46872a(7) =825944a(8) =16810048a(9) =387952668a(10) =10010010100a(11) =285526191874

External references