Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.
A264374
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.
Terms
- a(0) =4a(1) =6a(2) =80a(3) =441a(4) =3249a(5) =22484a(6) =156293a(7) =1097881a(8) =7657324a(9) =53631087a(10) =374971549a(11) =2623479579a(12) =18351250984a(13) =128373536659a(14) =898014323096
External references
- oeis: A264374