Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive increases.
A263640
Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive increases.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =17a(4) =70a(5) =349a(6) =1389a(7) =4255a(8) =13529a(9) =42700a(10) =141128a(11) =479893a(12) =1639260a(13) =5542549a(14) =18548087a(15) =62017274a(16) =207179998a(17) =694864003a(18) =2330691027a(19) =7821792735a(20) =26241990473a(21) =87992594947a(22) =295032591603a(23) =989183937210
External references
- oeis: A263640