T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing medians of every three consecutive values in every row and column.

A250504

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing medians of every three consecutive values in every row and column.

Terms

    a(0) =512a(1) =2744a(2) =2744a(3) =13824a(4) =23096a(5) =13824a(6) =68921a(7) =181058a(8) =181058a(9) =68921a(10) =314432a(11) =1410255a(12) =2191444a(13) =1410255a(14) =314432a(15) =1367631a(16) =9788132a(17) =26447174a(18) =26447174a(19) =9788132a(20) =1367631a(21) =5832000a(22) =64023155a(23) =277462074a(24) =495646476a(25) =277462074a(26) =64023155

External references