Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically.
A253814
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically.
Terms
- a(0) =2700a(1) =12992a(2) =60392a(3) =181070a(4) =651937a(5) =2008068a(6) =7125170a(7) =23696686a(8) =83201751a(9) =284492002a(10) =989245744a(11) =3404806015a(12) =11765494893a(13) =40505747884a(14) =139520863174a(15) =479991310053
External references
- oeis: A253814