Expansion of g.f. A(x) satisfying 1 - 2*Sum_{n>=1} Product_{k=1..n} (x^(2*k-1) - 2*A(x)) = Product_{k>=1} (1 - x^(2*k)) * (1 + x^k - 2*A(x))^2 / (1 + x^(2*k) - 2*A(x))^2.
A370345
Expansion of g.f. A(x) satisfying 1 - 2*Sum_{n>=1} Product_{k=1..n} (x^(2*k-1) - 2*A(x)) = Product_{k>=1} (1 - x^(2*k)) * (1 + x^k - 2*A(x))^2 / (1 + x^(2*k) - 2*A(x))^2.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =49a(4) =295a(5) =1893a(6) =12697a(7) =87985a(8) =625050a(9) =4527978a(10) =33321906a(11) =248416364a(12) =1872145027a(13) =14239620722a(14) =109168322844a(15) =842720914576
External references
- oeis: A370345