Expansion of 1/((1-3x)(1-9x)(1-27x)).

A227524

Expansion of 1/((1-3x)(1-9x)(1-27x)).

Terms

    a(0) =1a(1) =39a(2) =1170a(3) =32670a(4) =891891a(5) =24169509a(6) =653373540a(7) =17648258940a(8) =476567558181

External references