Total number of valid hook configurations of permutations of [n].

A318974

Total number of valid hook configurations of permutations of [n].

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =99a(6) =520a(7) =3126a(8) =21164a(9) =159226a(10) =1318000a(11) =11902268a(12) =116444668a(13) =1226878267a(14) =13849980752a(15) =166773534726

External references