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

A268798

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

Terms

    a(0) =0a(1) =3a(2) =3a(3) =12a(4) =22a(5) =12a(6) =36a(7) =78a(8) =78a(9) =36a(10) =96a(11) =234a(12) =248a(13) =234a(14) =96a(15) =240a(16) =652a(17) =950a(18) =950a(19) =652a(20) =240a(21) =576a(22) =1714a(23) =3384a(24) =4800a(25) =3384a(26) =1714a(27) =576a(28) =1344a(29) =4360

External references