Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically.

A253815

Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically.

Terms

    a(0) =12680a(1) =60392a(2) =214596a(3) =554638a(4) =1826190a(5) =5735723a(6) =19727216a(7) =63219653a(8) =215108264a(9) =694075512a(10) =2300636010a(11) =7389478710a(12) =24092560022a(13) =77484299331a(14) =251219943780a(15) =810727615448

External references