Sixth diagonal of triangle in A056588.

A255492

Sixth diagonal of triangle in A056588.

Terms

    a(0) =1a(1) =20a(2) =492a(3) =9288a(4) =163504a(5) =2616064a(6) =39369649a(7) =561744656a(8) =7690052788a(9) =101717711304

External references