a(n) = [x^n] 1 + x*(1 + x*(1 + x*(1 + x*(1 + ...)^(4*n))^(3*n))^(2*n))^n.
A302686
a(n) = [x^n] 1 + x*(1 + x*(1 + x*(1 + x*(1 + ...)^(4*n))^(3*n))^(2*n))^n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =21a(4) =596a(5) =32805a(6) =2960496a(7) =396523540a(8) =73803150440
External references
- oeis: A302686