T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A320402
T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =4a(4) =8a(5) =4a(6) =8a(7) =28a(8) =28a(9) =8a(10) =16a(11) =97a(12) =142a(13) =97a(14) =16a(15) =32a(16) =338a(17) =732a(18) =732a(19) =338a(20) =32a(21) =64a(22) =1178a(23) =3694a(24) =5956a(25) =3694a(26) =1178a(27) =64a(28) =128a(29) =4105
External references
- oeis: A320402