T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

A264195

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change +-(.,.) 0,0 0,2 or 2,1.

Terms

    a(0) =1a(1) =4a(2) =2a(3) =16a(4) =18a(5) =4a(6) =36a(7) =180a(8) =81a(9) =8a(10) =81a(11) =864a(12) =2025a(13) =360a(14) =16a(15) =225a(16) =4608a(17) =20736a(18) =19845a(19) =1600a(20) =32a(21) =625a(22) =29040a(23) =262144a(24) =395280a(25) =194481a(26) =6760a(27) =64a(28) =1600a(29) =184525

External references