T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.

A269052

T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.

Terms

    a(0) =3a(1) =9a(2) =9a(3) =24a(4) =42a(5) =27a(6) =60a(7) =102a(8) =174a(9) =81a(10) =144a(11) =360a(12) =594a(13) =666a(14) =243a(15) =336a(16) =1068a(17) =3078a(18) =3258a(19) =2430a(20) =729a(21) =768a(22) =3288a(23) =13140a(24) =24192a(25) =17346a(26) =8586a(27) =2187a(28) =1728a(29) =9864

External references