Expansion of exp( Sum_{n>=1} -sigma(8*n)*x^n/n ) in powers of x.

Terms

a(0) =1a(1) =-15a(2) =97a(3) =-350a(4) =770a(5) =-1133a(6) =1540a(7) =-2731a(8) =4230a(9) =-3960a(10) =3402a(11) =-6580a(12) =9167a(13) =-5390a(14) =4310a(15) =-11061a(16) =12320a(17) =-5306a(18) =2030a(19) =-7530a(20) =14784a(21) =-4340a(22) =-10119a(23) =-9240a(24) =20090a(25) =11438a(26) =-17275a(27) =-4928a(28) =2270a(29) =14080