G.f. satisfies: 1/A(x) = Sum_{n>=0} (n+1)^2*A000108(n)*x^n*A(x)^n, where A000108(n) = C(2n,n)/(n+1) is the n-th Catalan number.
A187594
G.f. satisfies: 1/A(x) = Sum_{n>=0} (n+1)^2*A000108(n)*x^n*A(x)^n, where A000108(n) = C(2n,n)/(n+1) is the n-th Catalan number.
Terms
- a(0) =1a(1) =-4a(2) =14a(3) =-40a(4) =78a(5) =0a(6) =-836a(7) =4224a(8) =-11050a(9) =0a(10) =162564a(11) =-905216a(12) =2553740a(13) =0a(14) =-41941512a(15) =243433472a(16) =-711366810a(17) =0a(18) =12363548340a(19) =-73437020160a(20) =219033228260a(21) =0a(25) =0
External references
- oeis: A187594