T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

A205935

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

Terms

    a(0) =256a(1) =3036a(2) =3036a(3) =32208a(4) =95888a(5) =32208a(6) =319784a(7) =2554260a(8) =2554260a(9) =319784a(10) =3048544a(11) =61330824a(12) =164649752a(13) =61330824a(14) =3048544a(15) =28259556a(16) =1380479280a(17) =9355289120a(18) =9355289120a(19) =1380479280a(20) =28259556a(21) =256692580a(22) =29707151720a(23) =490921163308

External references