Arises in enumerating orientable small covers over cubes.

A153255

Arises in enumerating orientable small covers over cubes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =4a(4) =43a(5) =1156a(6) =74581a(7) =11226874a(8) =3862830343

External references