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A254737 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically 1
2848, 19782, 130554, 795666, 4613180, 26334567, 148992766, 835291656, 4658392738, 25877167367, 143353076996, 792328254848, 4372508061480, 24098933827502, 132699992555054, 730161877826513, 4015459447103366 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A254743

LINKS

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

R. H. Hardin, Empirical recurrence of order 57

FORMULA

Empirical recurrence of order 57 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A317473 A257155 A257148 * A234416 A218597 A259296

Adjacent sequences:  A254734 A254735 A254736 * A254738 A254739 A254740

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2015

STATUS

approved

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Last modified January 26 08:44 EST 2022. Contains 350578 sequences. (Running on oeis4.)