T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230337
T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =6a(5) =0a(6) =0a(7) =34a(8) =34a(9) =0a(10) =0a(11) =218a(12) =534a(13) =218a(14) =0a(15) =0a(16) =1386a(17) =9162a(18) =9162a(19) =1386a(20) =0a(21) =0a(22) =8810a(23) =157200a(24) =438284a(25) =157200a(26) =8810a(27) =0a(28) =0a(29) =56010
External references
- oeis: A230337