Number of permutations of [n] whose fixed points sum to n.
A369796
Number of permutations of [n] whose fixed points sum to n.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =3a(5) =13a(6) =64a(7) =406a(8) =2737a(9) =23044a(10) =200509a(11) =2078460a(12) =22323513a(13) =275402437a(14) =3501602483a(15) =50310672046a(16) =739235942264
External references
- oeis: A369796