Number of pairs of endofunctions f, g on [n] satisfying f(g^4(i)) = f(i) for all i in [n].

A245913

Number of pairs of endofunctions f, g on [n] satisfying f(g^4(i)) = f(i) for all i in [n].

Terms

    a(0) =1a(1) =1a(2) =12a(3) =249a(4) =9184a(5) =488745a(6) =35463456a(7) =3212948809a(8) =369653885952

External references