T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nonincreasing horizontally and nondecreasing vertically.
A253544
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nonincreasing horizontally and nondecreasing vertically.
Terms
- a(0) =512a(1) =3328a(2) =3328a(3) =20480a(4) =33568a(5) =20480a(6) =119040a(7) =317696a(8) =317696a(9) =119040a(10) =679936a(11) =2801200a(12) =4414976a(13) =2801200a(14) =679936a(15) =3825920a(16) =24576256a(17) =57759744a(18) =57759744a(19) =24576256a(20) =3825920a(21) =21426176a(22) =212432512a(23) =751577856a(24) =1181976144a(25) =751577856
External references
- oeis: A253544