Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and equal numbers of elements moved upwards and downwards.
A263742
Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and equal numbers of elements moved upwards and downwards.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =14a(4) =46a(5) =282a(6) =1394a(7) =10090a(8) =44914a(9) =266476a(10) =1144246a(11) =6123066a(12) =27514165a(13) =148657877a(14) =712133826a(15) =3868859444a(16) =19001179140a(17) =101945373036a(18) =505520499480
External references
- oeis: A263742