Expansion of g.f. 1/((1-5*x)*(1-7*x)).

Terms

a(0) =1a(1) =12a(2) =109a(3) =888a(4) =6841a(5) =51012a(6) =372709a(7) =2687088a(8) =19200241a(9) =136354812a(10) =964249309a(11) =6798573288a(12) =47834153641a(13) =336059778612