Expansion of 1/((1-x)(1-4x)(1-6x)).

Terms

a(0) =1a(1) =11a(2) =87a(3) =607a(4) =3983a(5) =25263a(6) =157039a(7) =964079a(8) =5871855a(9) =35580655a(10) =214882031a(11) =1294884591a(12) =7791677167a(13) =46839541487a(14) =281395162863