Numerator of Bernoulli(n, 1/8).

Terms

a(0) =1a(1) =-3a(2) =11a(3) =21a(4) =-1313a(5) =-595a(6) =90941a(7) =39109a(8) =-5906513a(9) =-4525731a(10) =1896204505a(11) =805349237a(13) =-203564524787