Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and equal numbers of elements moved upwards and downwards.
A263743
Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 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) =12658a(8) =68834a(9) =535262a(10) =2657220a(11) =17475120a(12) =85950104a(13) =527877048a(14) =2718408447a(15) =16862137915a(16) =91926451748a(17) =573370470804
External references
- oeis: A263743