Number of permutations p of [n] with p(i) <> i^2.
A187847
Number of permutations p of [n] with p(i) <> i^2.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =4a(4) =14a(5) =78a(6) =504a(7) =3720a(8) =30960a(9) =256320a(10) =2656080a(11) =30078720a(12) =369774720a(13) =4906137600a(14) =69894316800
External references
- oeis: A187847