Expansion of e.g.f. cos( sqrt(2) * log(1+x) ).

Terms

a(0) =1a(1) =0a(2) =-2a(3) =6a(4) =-18a(5) =60a(6) =-216a(7) =756a(8) =-1620a(9) =-14256a(10) =349272a(11) =-5452920a(12) =78885576a(13) =-1143659088a(14) =17074183104a(15) =-265437239760