Column 0 of triangle A132620.

A132621

Column 0 of triangle A132620.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =9a(4) =76a(5) =1015a(6) =18996a(7) =461160a(8) =13810056a(9) =492785919a(10) =20433145960a(11) =966019244498

External references