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A258533 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
65548, 342157, 1455282, 6505920, 27337100, 112691334, 455126938, 1772033766, 6734845200, 25249454288, 95219674164, 358817876108, 1348386258986, 5051397246442, 19013904134224, 72034257666458, 275203998778230 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A258530
LINKS
FORMULA
Empirical recurrence of order 63 (see link above)
EXAMPLE
Some solutions for n=1
..1..1..0....0..0..0....1..0..0....1..0..0....0..1..0....1..0..0....1..1..0
..0..0..0....1..0..1....1..0..1....0..1..0....0..0..0....1..0..1....0..1..0
..1..1..0....1..0..0....1..0..0....0..1..0....1..1..0....0..0..1....0..1..0
..0..0..1....0..1..0....0..1..0....1..0..0....1..0..0....0..0..0....1..0..1
..1..0..1....1..1..0....0..1..0....0..0..1....0..1..0....0..1..1....0..1..1
..0..1..1....0..1..1....1..0..1....0..1..0....1..0..1....1..0..1....0..0..0
CROSSREFS
Sequence in context: A282777 A096555 A362950 * A258526 A254918 A268912
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 02 2015
STATUS
approved

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Last modified April 12 16:49 EDT 2024. Contains 371635 sequences. (Running on oeis4.)