Expansion of Product_{k>=1} (1-x^k)^26.

Terms

a(0) =1a(1) =-26a(2) =299a(3) =-1950a(4) =7475a(5) =-13754a(6) =-12220a(7) =132756a(8) =-276575a(9) =0a(10) =1010100a(11) =-1486030a(12) =-519961a(13) =2486300a(14) =829725a(15) =-2215486a(16) =-11643060a(17) =18523050a(18) =16317925a(19) =-42861650a(20) =0a(21) =11010090a(22) =59644221a(23) =-5743400a(24) =-138219900