Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254026
Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =1267488a(1) =2035893a(2) =3051110a(3) =6033603a(4) =12254144a(5) =26519069a(6) =45398628a(7) =79505757a(8) =151171642a(9) =294669082a(10) =556904588a(11) =1050666632a(12) =1947133972a(13) =3502846663a(14) =6300247808a(15) =11382424345a(16) =20344476646a(17) =36237438719a(18) =64227305420a(19) =112853340126
External references
- oeis: A254026