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

A268904

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

Terms

    a(0) =0a(1) =3a(2) =0a(3) =12a(4) =36a(5) =0a(6) =36a(7) =168a(8) =240a(9) =0a(10) =96a(11) =696a(12) =1584a(13) =1344a(14) =0a(15) =240a(16) =2664a(17) =9720a(18) =12960a(19) =6912a(20) =0a(21) =576a(22) =9720a(23) =54936a(24) =118584a(25) =98496a(26) =33792a(27) =0a(28) =1344a(29) =34344

External references