Expansion of e.g.f. exp(x * (1 - x^4)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =-119a(6) =-719a(7) =-2519a(8) =-6719a(9) =-15119a(10) =1784161a(11) =19902961a(12) =119655361a(13) =518763961a(14) =1815974161a(15) =-212497445159