Numerator of Euler(n, 3/10).

Terms

a(0) =1a(1) =-1a(2) =-21a(3) =71a(4) =2541a(5) =-14641a(6) =-771561a(7) =6242711a(8) =437721081a(9) =-4555133281a(10) =-399147115101