T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with each element of every 2X2 subblock being the sum mod 4 of two others.

A183854

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with each element of every 2X2 subblock being the sum mod 4 of two others.

Terms

    a(0) =35a(1) =107a(2) =107a(3) =328a(4) =429a(5) =328a(6) =1011a(7) =1766a(8) =1766a(9) =1011a(10) =3117a(11) =7453a(12) =9557a(13) =7453a(14) =3117a(15) =9650a(16) =31767a(17) =54724a(18) =54724a(19) =31767a(20) =9650a(21) =29863a(22) =136894a(23) =310856a(24) =448665a(25) =310856a(26) =136894a(27) =29863a(28) =92771a(29) =591211

External references