Expansion of exp( Sum_{n>=1} -sigma_2(3*n)*x^n/n ) in powers of x.

Terms

a(0) =1a(1) =-10a(2) =25a(3) =53a(4) =-270a(5) =-77a(6) =1057a(7) =610a(8) =-2031a(9) =-5438a(10) =-1953a(11) =17236a(12) =34121a(13) =3351a(14) =-103369a(15) =-195850a(16) =-55471a(17) =468448a(18) =1067785a(19) =764094a(20) =-1430780a(21) =-4974559a(22) =-6242563a(23) =334620a(24) =16946199a(25) =34459888a(26) =29243953a(27) =-24503978a(28) =-124514921a(29) =-205795663