Expansion of (1+4*x+x^2)/((1+x)^2*(1-x)^5).

Terms

a(0) =1a(1) =7a(2) =21a(3) =51a(4) =102a(5) =186a(6) =310a(7) =490a(8) =735a(9) =1065a(10) =1491a(11) =2037a(12) =2716a(13) =3556a(14) =4572a(15) =5796a(16) =7245a(17) =8955a(18) =10945a(19) =13255a(20) =15906a(21) =18942a(22) =22386a(23) =26286a(24) =30667a(25) =35581a(26) =41055a(27) =47145a(28) =53880a(29) =61320