T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A300321

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =3a(6) =5a(7) =4a(8) =4a(9) =5a(10) =8a(11) =16a(12) =16a(13) =16a(14) =8a(15) =13a(16) =50a(17) =61a(18) =61a(19) =50a(20) =13a(21) =21a(22) =112a(23) =186a(24) =735a(25) =186a(26) =112a(27) =21a(28) =34a(29) =348

External references