Number of generalized cycle-up-down permutations of [n].

A249395

Number of generalized cycle-up-down permutations of [n].

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =21a(5) =97a(6) =491a(7) =2989a(8) =19756a(9) =148444a(10) =1205731a(11) =10767889a(12) =103379533a(13) =1069512329a(14) =11819221164a(15) =138980503372

External references