Number of permutations of length n with spread 0.
A004204
Number of permutations of length n with spread 0.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =4a(4) =20a(5) =144a(6) =630a(7) =5696a(8) =39366a(9) =366400a(10) =3634950a(11) =39066624a(12) =479163828a(13) =6226534272a(14) =87238701000
External references
- oeis: A004204