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

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =5a(6) =15a(7) =35a(8) =140a(9) =1386a(10) =12810a(11) =92730a(12) =589545a(13) =4234945a(14) =41832791a(15) =483334215a(16) =5401798220a(17) =57262207380a(18) =626438655900