G.f. A(x) satisfies: 2 = Product_{n>=1} (1 + x^n*A(x)) * (1 + x^(n-1)/A(x)).
A356508
G.f. A(x) satisfies: 2 = Product_{n>=1} (1 + x^n*A(x)) * (1 + x^(n-1)/A(x)).
Terms
- a(0) =1a(1) =4a(2) =14a(3) =84a(4) =444a(5) =2928a(6) =18214a(7) =125428a(8) =844534a(9) =5989816a(10) =42186878a(11) =305757288a(12) =2215509018a(13) =16326672796a(14) =120612763510a(15) =900561207232
External references
- oeis: A356508