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A258520 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically 1
2371, 7334, 13616, 23785, 45771, 91023, 169230, 300889, 536665, 960950, 1692043, 2898384, 4959172, 8588273, 14914835, 25562679, 43219445, 73301442, 125444470, 214770721, 364129421, 613091328, 1036893028, 1766260617, 3007189322 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A258522

LINKS

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

R. H. Hardin, Empirical recurrence of order 94

FORMULA

Empirical recurrence of order 94 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Cf. A258522

Sequence in context: A185607 A068282 A234328 * A232906 A241933 A045303

Adjacent sequences:  A258517 A258518 A258519 * A258521 A258522 A258523

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 01 2015

STATUS

approved

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Last modified January 27 10:27 EST 2021. Contains 340461 sequences. (Running on oeis4.)