T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
A184095
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
Terms
- a(0) =86a(1) =216a(2) =216a(3) =684a(4) =260a(5) =684a(6) =1714a(7) =1146a(8) =1146a(9) =1714a(10) =4434a(11) =2848a(12) =9483a(13) =2848a(14) =4434a(15) =10610a(16) =9945a(17) =40401a(18) =40401a(19) =9945a(20) =10610a(21) =24754a(22) =28434a(23) =235003a(24) =368326a(25) =235003a(26) =28434a(27) =24754a(28) =55451a(29) =87119
External references
- oeis: A184095