Expansion of tan(log(1+x))*cosh(x).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =7a(4) =-24a(5) =155a(6) =-1095a(7) =9497a(8) =-94248a(9) =1059845a(10) =-13281525a(11) =183496091a(12) =-2769635616a(13) =45333709967a(14) =-799674327179