Expansion of 1 / Sum_{k>=0} x^(k*(5*k - 3)/2).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-1a(4) =1a(5) =-1a(6) =1a(7) =-2a(8) =3a(9) =-4a(10) =5a(11) =-6a(12) =7a(13) =-8a(14) =10a(15) =-13a(16) =17a(17) =-22a(18) =27a(19) =-33a(20) =40a(21) =-49a(22) =61a(23) =-77a(24) =98a(25) =-123a(26) =153a(27) =-189a(28) =233a(29) =-288