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 -1,2 1,0 or 0,-1.

A264550

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 -1,2 1,0 or 0,-1.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =2a(5) =0a(6) =1a(7) =6a(8) =5a(9) =0a(10) =1a(11) =16a(12) =16a(13) =10a(14) =1a(15) =3a(16) =40a(17) =36a(18) =45a(19) =21a(20) =0a(21) =3a(22) =96a(23) =172a(24) =216a(25) =133a(26) =44a(27) =0a(28) =4a(29) =240

External references