G.f. A(x) satisfies A(x) = 1 + x * ((1 - x) / A(x))^2.
A366434
G.f. A(x) satisfies A(x) = 1 + x * ((1 - x) / A(x))^2.
Terms
- a(0) =1a(1) =1a(2) =-4a(3) =16a(4) =-84a(5) =496a(6) =-3140a(7) =20832a(8) =-142932a(9) =1005856a(10) =-7220100a(11) =52657392a(12) =-389088084a(13) =2906551440a(14) =-21914464708a(15) =166548194240
External references
- oeis: A366434