Number of 2-factors in W_5 X P_n.

A003736

Number of 2-factors in W_5 X P_n.

Terms

    a(0) =4a(1) =156a(2) =3832a(3) =101476a(4) =2653176a(5) =69537644a(6) =1821675752a(7) =47726949876

External references