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A235659 Number of (n+1)X(7+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise 1
11520, 550175, 29920256, 1760232169, 111788667635, 7311691586871, 476303656695622, 30073558582073391, 1816505165495056102, 104267586694590459778, 5682110684004293239334, 294299778211572282608127 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A235660

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A251879 A201048 A236522 * A258564 A258561 A063061

Adjacent sequences:  A235656 A235657 A235658 * A235660 A235661 A235662

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2014

STATUS

approved

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Last modified December 8 20:37 EST 2021. Contains 349596 sequences. (Running on oeis4.)