G.f.: Sum_{n>=1} ( (1+x)^n + 2^n*x^n )^n / 2^n.
A323322
G.f.: Sum_{n>=1} ( (1+x)^n + 2^n*x^n )^n / 2^n.
Terms
- a(0) =1a(1) =7a(2) =74a(3) =1495a(4) =43240a(5) =1615922a(6) =73898278a(7) =3995605174a(8) =249332639378
External references
- oeis: A323322
A323322
G.f.: Sum_{n>=1} ( (1+x)^n + 2^n*x^n )^n / 2^n.