a(n) = A005704( (3^n + (-1)^n - 2)/4 ), where A005704(n) = number of partitions of 3n into powers of 3.
A133987
a(n) = A005704( (3^n + (-1)^n - 2)/4 ), where A005704(n) = number of partitions of 3n into powers of 3.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =12a(4) =117a(5) =2250a(6) =107352a(7) =12298500a(8) =3613136949
External references
- oeis: A133987