G.f.: A(x) = Sum_{n>=0} x^n * (1+x)^(2*n^2) / A(x)^(2*n).
A321607
G.f.: A(x) = Sum_{n>=0} x^n * (1+x)^(2*n^2) / A(x)^(2*n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =11a(5) =50a(6) =294a(7) =1833a(8) =13093a(9) =100456a(10) =830541a(11) =7313419a(12) =68137388a(13) =668327844a(14) =6873073257a(15) =73853969234a(16) =826869429175
External references
- oeis: A321607