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

Terms

a(0) =1a(1) =8a(2) =47a(3) =238a(4) =1113a(5) =4956a(6) =21379a(7) =90266a(8) =375485a(9) =1545544a(10) =6313671a(11) =25650534a(12) =103792417a(13) =418745972a(14) =1685723723a(15) =6775136242a(16) =27197312709a(17) =109079641440a(18) =437189912335