Number of permutations of [n] having exactly 7 strong fixed blocks.

A225968

Number of permutations of [n] having exactly 7 strong fixed blocks.

Terms

    a(0) =1a(1) =25a(2) =375a(3) =4439a(4) =46240a(5) =449376a(6) =4226604a(7) =39474916a(8) =373382588a(9) =3635491860a(10) =36957484104a(11) =397181210056

External references