T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317823

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =2a(7) =16a(8) =16a(9) =2a(10) =3a(11) =50a(12) =35a(13) =50a(14) =3a(15) =5a(16) =160a(17) =135a(18) =135a(19) =160a(20) =5a(21) =8a(22) =511a(23) =356a(24) =702a(25) =356a(26) =511a(27) =8a(28) =13a(29) =1634

External references