G.f. satisfies: -1 = Product_{n>=1} (1-x^n) * (1 - x^n/A(x)) * (1 - x^(n-1)*A(x)), where g.f. A(x) = Sum_{n>=0} a(n)*2*(x/4)^n.
A268300
G.f. satisfies: -1 = Product_{n>=1} (1-x^n) * (1 - x^n/A(x)) * (1 - x^(n-1)*A(x)), where g.f. A(x) = Sum_{n>=0} a(n)*2*(x/4)^n.
Terms
- a(0) =1a(1) =7a(2) =119a(3) =2118a(4) =42523a(5) =914922a(6) =20745494a(7) =487390092a(8) =11764545555a(9) =289962708802
External references
- oeis: A268300