G.f. A(x) satisfies A(x) = Product_{k>=1} (1 + x^k*A(x)^(2*k)).
A366026
G.f. A(x) satisfies A(x) = Product_{k>=1} (1 + x^k*A(x)^(2*k)).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =64a(5) =340a(6) =1903a(7) =11053a(8) =65992a(9) =402508a(10) =2497207a(11) =15709873a(12) =99980007a(13) =642535004a(14) =4164018953a(15) =27181480712a(16) =178559253274
External references
- oeis: A366026