T(n,k)=Number of nXk 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it.
A209019
T(n,k)=Number of nXk 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it.
Terms
- a(0) =4a(1) =12a(2) =12a(3) =36a(4) =130a(5) =36a(6) =108a(7) =1430a(8) =1430a(9) =108a(10) =324a(11) =15724a(12) =57412a(13) =15724a(14) =324a(15) =972a(16) =172936a(17) =2303052a(18) =2303052a(19) =172936a(20) =972a(21) =2916a(22) =1901964a(23) =92409982a(24) =337083370a(25) =92409982a(26) =1901964a(27) =2916a(28) =8748a(29) =20918008
External references
- oeis: A209019