T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A300539

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =16a(12) =12a(13) =16a(14) =1a(15) =1a(16) =40a(17) =36a(18) =36a(19) =40a(20) =1a(21) =1a(22) =113a(23) =122a(24) =300a(25) =122a(26) =113a(27) =1a(28) =1a(29) =304

External references