Numerator of Euler(n, 3/8).

Terms

a(0) =1a(1) =-1a(2) =-15a(3) =47a(4) =1185a(5) =-6241a(6) =-230895a(7) =1704527a(8) =83860545a(9) =-796079041a(10) =-48942778575a(11) =567864586607