a(n) = [x^n] Product_{k=1..n} 1/(x^(3*k)*(1-x^k)^3).
A258796
a(n) = [x^n] Product_{k=1..n} 1/(x^(3*k)*(1-x^k)^3).
Terms
- a(0) =1a(1) =15a(2) =882a(3) =67385a(4) =5938518a(5) =575782833a(6) =59765085601
External references
- oeis: A258796
A258796
a(n) = [x^n] Product_{k=1..n} 1/(x^(3*k)*(1-x^k)^3).