Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.
A264418
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.
Terms
- a(0) =0a(1) =12a(2) =96a(3) =529a(4) =4843a(5) =44264a(6) =352713a(7) =2840274a(8) =23795758a(9) =197390196a(10) =1619132059a(11) =13345740560a(12) =110326933611a(13) =910298134238
External references
- oeis: A264418