Number of permutations of [n] with an odd number of rises.
A262745
Number of permutations of [n] with an odd number of rises.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =4a(4) =12a(5) =52a(6) =360a(7) =2656a(8) =20160a(9) =177472a(10) =1814400a(11) =20135296a(12) =239500800a(13) =3102326272a(14) =43589145600a(15) =654789062656
External references
- oeis: A262745