Numerator of Euler(n,3).

Terms

a(0) =1a(1) =5a(2) =6a(3) =55a(4) =30a(5) =125a(6) =126a(7) =2015a(8) =510a(9) =2075a(10) =2046a(11) =15685a(12) =8190a(13) =38225a(14) =32766a(15) =118975a(16) =131070a(17) =3726575a(18) =524286a(19) =-217736285a(20) =2097150a(21) =4730505125a(22) =8388606a(23) =-968249463115a(24) =33554430a(26) =134217726a(28) =536870910