Number of permutations of length n with 3 consecutive ascending pairs.

A000313

Number of permutations of length n with 3 consecutive ascending pairs.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =30a(6) =220a(7) =1855a(8) =17304a(9) =177996a(10) =2002440a(11) =24474285a(12) =323060540a(13) =4581585866a(14) =69487385604

External references