Expansion of 1/((1-7x)(1-12x)).

Terms

a(0) =1a(1) =19a(2) =277a(3) =3667a(4) =46405a(5) =573667a(6) =7001653a(7) =84843379a(8) =1023885349a(9) =12326977795a(10) =148206208789