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A186837 Number of (n+2)X8 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards. 0
1421952, 33731024, 798816802, 17494747887, 235234097572, 3176962520030 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A186840

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 4X8

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

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

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

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

CROSSREFS

Sequence in context: A064871 A237397 A301557 * A054852 A242824 A204288

Adjacent sequences:  A186834 A186835 A186836 * A186838 A186839 A186840

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 27 2011

STATUS

approved

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Last modified November 17 06:06 EST 2019. Contains 329217 sequences. (Running on oeis4.)