G.f. A(x) satisfies: 1/(1-x) = Sum_{n>=0} (1+x)^(n^2) * x^n / A(x)^n.
A320954
G.f. A(x) satisfies: 1/(1-x) = Sum_{n>=0} (1+x)^(n^2) * x^n / A(x)^n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =50a(6) =200a(7) =919a(8) =4633a(9) =25361a(10) =148606a(11) =923394a(12) =6043996a(13) =41447150a(14) =296571213a(15) =2206965193a(16) =17034374165a(17) =136066491764
External references
- oeis: A320954