Number of permutations of [n] having no adjacent 2-cycles and no adjacent 3-cycles.

A370570

Number of permutations of [n] having no adjacent 2-cycles and no adjacent 3-cycles.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =17a(5) =95a(6) =594a(7) =4280a(8) =35018a(9) =320636a(10) =3249951a(11) =36140133a(12) =437572800a(13) =5731086422a(14) =80745062993

External references