a(n) = n! * [x^n] log(1 + exp(x)*(x + (n/2 - 1)*x^2)).
A320255
a(n) = n! * [x^n] log(1 + exp(x)*(x + (n/2 - 1)*x^2)).
Terms
- a(0) =0a(1) =1a(2) =1a(3) =-1a(4) =-26a(5) =39a(6) =3666a(7) =-7400a(8) =-1488416a(9) =3802113a(10) =1322570530a(11) =-4095154284
External references
- oeis: A320255