Number of derangements of [n] having no adjacent 2-cycles, no adjacent 3-cycles and no adjacent 4-cycles.
A370323
Number of derangements of [n] having no adjacent 2-cycles, no adjacent 3-cycles and no adjacent 4-cycles.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =6a(5) =35a(6) =217a(7) =1568a(8) =12848a(9) =117738a(10) =1194019a(11) =13282346a(12) =160856190a(13) =2107154067a(14) =29691159876a(15) =447836111629
External references
- oeis: A370323