T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum minus the minimum of every 2X2 subblock equal.
A237340
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum minus the minimum of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1980a(2) =1980a(3) =15082a(4) =41220a(5) =15082a(6) =120808a(7) =821234a(8) =821234a(9) =120808a(10) =972356a(11) =17627820a(12) =39609294a(13) =17627820a(14) =972356a(15) =7935194a(16) =380945760a(17) =2137181038a(18) =2137181038a(19) =380945760a(20) =7935194a(21) =65088736a(22) =8406402902a(23) =114598315886
External references
- oeis: A237340