Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.

A264489

Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.

Terms

    a(0) =1a(1) =42a(2) =972a(3) =23076a(4) =2186741a(5) =42169152a(6) =2775259622a(7) =98973991195

External references