Expansion of 1/((1-2x)(1-5x)(1-9x)(1-11x)).

A026028

Expansion of 1/((1-2x)(1-5x)(1-9x)(1-11x)).

Terms

    a(0) =1a(1) =27a(2) =480a(3) =7130a(4) =96111a(5) =1221537a(6) =14941750a(7) =178032960a(8) =2082076821a(9) =24019528247a(10) =274281235020

External references