Number of permutations of length n with longest increasing subsequence of length 4.

A001455

Number of permutations of length n with longest increasing subsequence of length 4.

Terms

    a(0) =1a(1) =16a(2) =181a(3) =1821a(4) =17557a(5) =167449a(6) =1604098a(7) =15555398a(8) =153315999a(9) =1538907306a(10) =15743413076a(11) =164161815768

External references