Coefficient of x^3 in expansion of (x+1) * (x+5) * ... * (x+4*n-3).
A383701
Coefficient of x^3 in expansion of (x+1) * (x+5) * ... * (x+4*n-3).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =28a(5) =730a(6) =20460a(7) =633619a(8) =21740040a(9) =823020596a(10) =34174098440
External references
- oeis: A383701