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

A301951

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

Terms

    a(0) =0a(1) =1a(2) =0a(3) =1a(4) =2a(5) =0a(6) =2a(7) =5a(8) =5a(9) =0a(10) =3a(11) =16a(12) =20a(13) =13a(14) =0a(15) =5a(16) =52a(17) =123a(18) =83a(19) =34a(20) =0a(21) =8a(22) =169a(23) =680a(24) =947a(25) =342a(26) =89a(27) =0a(28) =13a(29) =549

External references