Number of permutations of length n without increasing or decreasing modular 3-sequences.

A165963

Number of permutations of length n without increasing or decreasing modular 3-sequences.

Terms

    a(0) =0a(1) =16a(2) =80a(3) =516a(4) =3794a(5) =31456a(6) =290970a(7) =2974380a(8) =33311520a(9) =405773448a(10) =5342413414a(11) =75612301688

External references