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A254508 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
55904, 238740, 2038857, 14550580, 95905212, 648678493, 4179100619, 26796334134, 169905026025, 1061834396584, 6585983377072, 40565200515478, 248253246263334, 1511192700970456, 9157127405097292, 55263188107282010, 332319723214061319 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A254512

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A203866 A205093 A206081 * A254515 A254815 A229436

Adjacent sequences: A254505 A254506 A254507 * A254509 A254510 A254511

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 2015

STATUS

approved

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Last modified February 1 07:07 EST 2023. Contains 359981 sequences. (Running on oeis4.)