T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise.
A235660
T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise.
Terms
- a(0) =16a(1) =52a(2) =52a(3) =160a(4) =276a(5) =160a(6) =476a(7) =1368a(8) =1368a(9) =476a(10) =1392a(11) =6378a(12) =11236a(13) =6378a(14) =1392a(15) =4020a(16) =28823a(17) =85700a(18) =85700a(19) =28823a(20) =4020a(21) =11520a(22) =126926a(23) =627189a(24) =1088450a(25) =627189a(26) =126926a(27) =11520a(28) =32828a(29) =550175
External references
- oeis: A235660