Arises from the enumeration of cycle-alternating permutations.

A362109

Arises from the enumeration of cycle-alternating permutations.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =78a(6) =461a(7) =3417a(8) =31134a(9) =340217a(10) =4365673a(11) =64840274a(12) =1101675849a(13) =21181863649a(14) =456577039642

External references