A258520 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically

2371, 7334, 13616, 23785, 45771, 91023, 169230, 300889, 536665, 960950, 1692043, 2898384, 4959172, 8588273, 14914835, 25562679, 43219445, 73301442, 125444470, 214770721, 364129421, 613091328, 1036893028, 1766260617, 3007189322

Offset

1,1

Comments

Column 2 of A258522

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 94

Formula

Empirical recurrence of order 94 (see link above)

Example

Some solutions for n=4
..0..0..1..1....0..1..0..0....1..1..0..0....1..1..0..0....1..0..0..0
..1..1..0..0....0..1..1..1....0..1..1..1....1..1..0..1....1..1..1..0
..1..1..0..0....1..0..0..1....0..1..1..0....0..1..1..1....0..1..1..0
..0..0..1..1....1..1..0..0....1..0..0..0....0..1..1..0....0..0..0..1
..0..0..1..1....0..1..0..0....1..0..0..0....0..1..1..0....0..0..0..1
..0..0..0..1....0..1..0..1....0..0..0..1....1..0..0..1....1..0..0..1

Crossrefs

Cf. A258522

Sequence in context: A185607 A068282 A234328 * A232906 A241933 A045303

Adjacent sequences: A258517 A258518 A258519 * A258521 A258522 A258523

Keyword

nonn

Author

R. H. Hardin, Jun 01 2015

Status

approved