Expansion of g.f. 1/((1-9*x)*(1-12*x)).

A016191

Expansion of g.f. 1/((1-9*x)*(1-12*x)).

Terms

    a(0) =1a(1) =21a(2) =333a(3) =4725a(4) =63261a(5) =818181a(6) =10349613a(7) =128978325a(8) =1590786621a(9) =19476859941a(10) =237209103693

External references