Number of derangements of [n] having no adjacent 2-cycles, no adjacent 3-cycles, no adjacent 4-cycles and no adjacent 5-cycles.

A370324

Number of derangements of [n] having no adjacent 2-cycles, no adjacent 3-cycles, no adjacent 4-cycles and no adjacent 5-cycles.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =1a(4) =6a(5) =34a(6) =217a(7) =1567a(8) =12842a(9) =117704a(10) =1193802a(11) =13280778a(12) =160843345a(13) =2107036346a(14) =29689965966a(15) =447822830067

External references