T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
A183971
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
Terms
- a(0) =81a(1) =459a(2) =459a(3) =2601a(4) =4401a(5) =2601a(6) =15759a(7) =43163a(8) =43163a(9) =15759a(10) =95481a(11) =459821a(12) =746017a(13) =459821a(14) =95481a(15) =586791a(16) =4911675a(17) =14219749a(18) =14219749a(19) =4911675a(20) =586791a(21) =3606201a(22) =53575889a(23) =272110811a(24) =492135291a(25) =272110811a(26) =53575889a(27) =3606201a(28) =22235391
External references
- oeis: A183971