O.g.f. A(x) satisfies: 0 = Sum_{n>=1} (b(n) - A(x))^n * (2*x)^n / n, where b(n) = 1 if n is odd or b(n) = 2 if n is even.
A326564
O.g.f. A(x) satisfies: 0 = Sum_{n>=1} (b(n) - A(x))^n * (2*x)^n / n, where b(n) = 1 if n is odd or b(n) = 2 if n is even.
Terms
- a(0) =1a(1) =1a(2) =-2a(3) =7a(4) =-26a(5) =102a(6) =-420a(7) =1787a(8) =-7794a(9) =34666a(10) =-156636a(11) =716982a(12) =-3317700a(13) =15494156a(14) =-72935624a(15) =345701843a(16) =-1648489762a(17) =7902956738a(18) =-38067806892a(19) =184152092450a(20) =-894259126540
External references
- oeis: A326564