T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
A231246
T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =14a(8) =6a(9) =0a(10) =0a(11) =44a(12) =78a(13) =20a(14) =0a(15) =0a(16) =146a(17) =464a(18) =552a(19) =68a(20) =0a(21) =0a(22) =572a(23) =3090a(24) =5992a(25) =3820a(26) =230a(27) =0a(28) =0a(29) =2258
External references
- oeis: A231246