A123228/2.

Terms

a(0) =3a(1) =-7a(2) =11a(3) =233a(4) =-3357a(5) =25673a(6) =-102709a(7) =-319207a(8) =9893763a(9) =-97727527a(10) =563250251a(11) =-818302327a(12) =-23939051037a(13) =331342081193