T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.

A269035

T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.

Terms

    a(0) =0a(1) =3a(2) =0a(3) =12a(4) =24a(5) =0a(6) =36a(7) =48a(8) =120a(9) =0a(10) =96a(11) =216a(12) =348a(13) =504a(14) =0a(15) =240a(16) =672a(17) =2166a(18) =2136a(19) =1944a(20) =0a(21) =576a(22) =2208a(23) =9528a(24) =18384a(25) =12228a(26) =7128a(27) =0a(28) =1344a(29) =6912

External references