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A258517 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
3456356, 46288077, 1030931222, 17303680979, 287984893776, 5245904339615, 94282780215006, 1659294419012438, 29395760753905418, 523152766780848946, 9288833933802115608, 164784211536203553116, 2925325373424901069520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A258511

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=1

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

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

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

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

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

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

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

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

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

CROSSREFS

Cf. A258511

Sequence in context: A114682 A157106 A123201 * A258510 A254997 A236356

Adjacent sequences:  A258514 A258515 A258516 * A258518 A258519 A258520

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 01 2015

STATUS

approved

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Last modified April 13 10:24 EDT 2021. Contains 342935 sequences. (Running on oeis4.)