T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change -1,1 1,0 1,-1 or 0,-1.

A264336

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change -1,1 1,0 1,-1 or 0,-1.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =4a(9) =1a(10) =2a(11) =8a(12) =11a(13) =8a(14) =2a(15) =3a(16) =16a(17) =40a(18) =40a(19) =16a(20) =3a(21) =4a(22) =32a(23) =133a(24) =240a(25) =133a(26) =32a(27) =4a(28) =6a(29) =64

External references