T(n,k)=Number of nXk 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
A233239
T(n,k)=Number of nXk 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =6a(4) =19a(5) =11a(6) =23a(7) =271a(8) =313a(9) =48a(10) =99a(11) =4504a(12) =18744a(13) =6046a(14) =236a(15) =452a(16) =79201a(17) =1212549a(18) =1409129a(19) =123352a(20) =1248a(21) =2136a(22) =1419889a(23) =79794804a(24) =338046654a(25) =107709266a(26) =2565169a(27) =6896a(28) =10313a(29) =25622596
External references
- oeis: A233239