A diagonal of table A125790: a(n) = A125790(n+1,n).

A125798

A diagonal of table A125790: a(n) = A125790(n+1,n).

Terms

    a(0) =1a(1) =4a(2) =35a(3) =656a(4) =25509a(5) =2026564a(6) =326603719a(7) =106355219008

External references