Expansion of ( 1-x ) / ( 1-4*x-3*x^2+3*x^3 ).

Terms

a(0) =1a(1) =3a(2) =15a(3) =66a(4) =300a(5) =1353a(6) =6114a(7) =27615a(8) =124743a(9) =563475a(10) =2545284a(11) =11497332a(12) =51934755a(13) =234595164a(14) =1059692925a(15) =4786752927a(16) =21622304991a(17) =97670399970a(18) =441188256072