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A186127 Number of (n+1)X9 binary arrays with every 2X2 subblock diagonal sum less antidiagonal sum equal to some horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum 1
678, 14606, 120290, 1574348, 17129792, 220010616, 2630528360, 33067061342, 411149162658, 5153688541776, 64828282889916, 815418585280038, 10288257115910818, 129785918260715398, 1639362506927114546 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A186128

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for 3X9

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

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

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

CROSSREFS

Sequence in context: A251836 A251830 A250872 * A097771 A121105 A046514

Adjacent sequences:  A186124 A186125 A186126 * A186128 A186129 A186130

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 13 2011

STATUS

approved

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Last modified November 27 04:52 EST 2021. Contains 349345 sequences. (Running on oeis4.)