Column 0 of triangle A132870 (first 30 terms only).

A132872

Column 0 of triangle A132870 (first 30 terms only).

Terms

    a(0) =1a(1) =1a(2) =6a(3) =132a(4) =7156a(5) =729895a(6) =119636226a(7) =28619359629

External references