1277463

Appears in sequences

• Number of (n+5)X12 0..1 matrices with each 6X6 subblock idempotent.at n=27A224576
• Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=19A254910