T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.

A187425

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.

Terms

    a(0) =0a(1) =175a(2) =175a(3) =609a(4) =1969a(5) =609a(6) =3593a(7) =6512a(8) =6512a(9) =3593a(10) =15055a(11) =44512a(12) =46764a(13) =44512a(14) =15055a(15) =76263a(16) =319792a(17) =602024a(18) =602024a(19) =319792a(20) =76263a(21) =353985a(22) =2142214a(23) =5254072a(24) =10014852a(25) =5254072a(26) =2142214a(27) =353985a(28) =1729733a(29) =13328138

External references