T(n,k)=Half the number of nXk 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.
A197109
T(n,k)=Half the number of nXk 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.
Terms
- a(0) =2a(1) =6a(2) =6a(3) =16a(4) =78a(5) =16a(6) =61a(7) =1015a(8) =1015a(9) =61a(10) =212a(11) =13526a(12) =50831a(13) =13526a(14) =212a(15) =753a(16) =181032a(17) =2548972a(18) =2548972a(19) =181032a(20) =753a(21) =2661a(22) =2421376a(23) =127561432a(24) =478107878a(25) =127561432a(26) =2421376a(27) =2661a(28) =9415a(29) =32393085
External references
- oeis: A197109