G.f. A(x) satisfies: A(x)^2 + A(-x)^2 = 2 and A(x)^-2 - A(-x)^-2 = -8*x.
A193618
G.f. A(x) satisfies: A(x)^2 + A(-x)^2 = 2 and A(x)^-2 - A(-x)^-2 = -8*x.
Terms
- a(0) =1a(1) =2a(2) =-2a(3) =-28a(4) =54a(5) =860a(6) =-2004a(7) =-33720a(8) =86054a(9) =1492908a(10) =-4019452a(11) =-71101832a(12) =198310460a(13) =3555617432a(14) =-10168382696a(15) =-184127171952a(16) =536496907782
External references
- oeis: A193618