A364277 Number of permutations of [n] such that no cycle contains its length as an element.

1, 0, 0, 1, 4, 24, 138, 1032, 8160, 75600, 751680, 8436960, 100679040, 1327052160, 18525024000, 280451808000, 4477627123200, 76690072166400, 1377634946688000, 26328977260185600, 525869478021888000, 11092929741653760000, 243781091314016256000, 5628622656645660672000

Offset: 0

Author

Alois P. Heinz, Jul 17 2023

Keywords

• nonn

Examples

			a(3) = 1: (13)(2).
a(4) = 4: (124)(3), (142)(3), (13)(2)(4), (14)(2)(3).
		

Links

• Wikipedia, Permutation

Crossrefs

Cf. A362362, A363881, A364279, A364406.