Number of 6-cycles in the n-halved cube graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =640a(4) =34720a(5) =533760a(6) =4735360a(7) =30822400a(8) =164183040a(9) =759521280a(10) =3163607040a(11) =12148899840a(12) =43724595200a(13) =149243494400a(14) =487404503040