Expansion of e.g.f. cos( sqrt(3) * log(1+x) ).

Terms

a(0) =1a(1) =0a(2) =-3a(3) =9a(4) =-24a(5) =60a(6) =-84a(7) =-756a(8) =13104a(9) =-157248a(10) =1795248a(11) =-20900880a(12) =254007936a(13) =-3250473408a(14) =43922668608a(15) =-626830626240