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A254890 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically 1
35272, 149931, 822072, 4577708, 15790369, 51232136, 141957783, 315713348, 681770400, 1433996470, 2855106608, 5527208360, 10355612789, 18793033325, 33853669795, 60750807357, 108653839544, 194562098838, 348578376839 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A254894

LINKS

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

EXAMPLE

Some solutions for n=2

..0..1..0..0..0..0....0..0..0..0..0..1....0..0..0..0..1..0....0..0..0..0..0..1

..0..1..0..1..1..0....0..1..0..0..1..1....1..1..0..0..1..0....0..0..1..0..0..1

..1..1..0..1..1..0....0..1..0..1..1..1....0..1..0..1..1..1....1..0..1..0..1..1

..1..0..0..1..1..0....0..0..1..1..0..1....0..1..0..1..1..1....0..0..1..1..1..1

CROSSREFS

Sequence in context: A257724 A254016 A254023 * A187855 A300762 A250978

Adjacent sequences:  A254887 A254888 A254889 * A254891 A254892 A254893

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 10 2015

STATUS

approved

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Last modified May 21 03:13 EDT 2022. Contains 353886 sequences. (Running on oeis4.)