Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x-x^2)^2 )^n.
A372458
Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x-x^2)^2 )^n.
Terms
- a(0) =1a(1) =3a(2) =25a(3) =225a(4) =2129a(5) =20723a(6) =205471a(7) =2063890a(8) =20931585a(9) =213864939a(10) =2198044805a(11) =22699471171a(12) =235354244255
External references
- oeis: A372458