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A254983 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally and vertically 1
2642, 12866, 56002, 273707, 1301410, 6027037, 28125597, 131242928, 611072260, 2847429072, 13277358450, 61913782538, 288771045558, 1347220992022, 6286065956155, 29332988038173, 136888663584706, 638853142958977 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A254989

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Cf. A254989

Sequence in context: A249462 A257183 A257190 * A235676 A235446 A235750

Adjacent sequences:  A254980 A254981 A254982 * A254984 A254985 A254986

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2015

STATUS

approved

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Last modified June 23 12:03 EDT 2021. Contains 345401 sequences. (Running on oeis4.)