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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 1
2630, 14226, 76615, 364039, 1645201, 7620738, 35110289, 160937385, 741804750, 3423993877, 15810300788, 73052896500, 337690620252, 1561140321305, 7217837292719, 33373602812501, 154315577978901, 713547491791682 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A254728
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2015
STATUS
approved

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Last modified July 19 15:21 EDT 2024. Contains 374410 sequences. (Running on oeis4.)