A254722 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally and vertically

2630, 14226, 76615, 364039, 1645201, 7620738, 35110289, 160937385, 741804750, 3423993877, 15810300788, 73052896500, 337690620252, 1561140321305, 7217837292719, 33373602812501, 154315577978901, 713547491791682

Offset

1,1

Comments

Column 2 of A254728

Links

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

R. H. Hardin, Empirical recurrence of order 75

Formula

Empirical recurrence of order 75 (see link above)

Example

Some solutions for n=3
..0..0..1..1....1..1..0..1....0..1..1..1....1..1..0..1....0..1..0..0
..1..0..1..0....1..0..0..1....1..0..1..1....1..0..1..1....1..0..1..1
..1..1..1..1....1..0..0..1....1..1..1..1....0..1..1..1....1..0..1..1
..0..1..1..1....1..1..1..0....0..1..1..1....1..1..1..1....1..1..1..1
..0..1..1..1....0..0..1..0....0..0..1..1....0..1..1..0....1..1..1..1

Crossrefs

Sequence in context: A020439 A254776 A254769 * A236502 A212605 A273184

Adjacent sequences: A254719 A254720 A254721 * A254723 A254724 A254725

Keyword

nonn

Author

R. H. Hardin, Feb 06 2015

Status

approved