G.f.: Sum_{n>=0} ((1+x)^(4*n) - 1)^n.
A301586
G.f.: Sum_{n>=0} ((1+x)^(4*n) - 1)^n.
Terms
- a(0) =1a(1) =4a(2) =70a(3) =2180a(4) =95729a(5) =5422192a(6) =375951144a(7) =30833206304
External references
- oeis: A301586
A301586
G.f.: Sum_{n>=0} ((1+x)^(4*n) - 1)^n.