T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every element next to itself plus and minus one within the range 0..3 horizontally, vertically or antidiagonally, with no adjacent elements equal.
A232391
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every element next to itself plus and minus one within the range 0..3 horizontally, vertically or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =12a(1) =18a(2) =18a(3) =78a(4) =64a(5) =78a(6) =190a(7) =192a(8) =192a(9) =190a(10) =670a(11) =840a(12) =1192a(13) =840a(14) =670a(15) =1954a(16) =3246a(17) =4646a(18) =4646a(19) =3246a(20) =1954a(21) =6224a(22) =12818a(23) =24848a(24) =28752a(25) =24848a(26) =12818a(27) =6224a(28) =19178a(29) =51240
External references
- oeis: A232391