a(n) = [x^(2^n+n-2)] (x + x^2 + x^4 + x^8 + ... + x^(2^n))^n for n>=1.
A135070
a(n) = [x^(2^n+n-2)] (x + x^2 + x^4 + x^8 + ... + x^(2^n))^n for n>=1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =18a(4) =70a(5) =600a(6) =4956a(7) =52528a(8) =358128a(9) =6654600a(10) =79967800a(11) =1453049400a(12) =16239408120a(13) =392541718660
External references
- oeis: A135070