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A236522 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 columnwise and nonincreasing rowwise 1
11520, 462970, 17385844, 610630403, 20627269098, 668463714817, 21144229954815, 652556241912311, 19847922853016156, 595359726112080244, 17710417384465606528, 522920157246017280935, 15370758158920152632621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A236523

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..92

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A293371 A251879 A201048 * A235659 A258564 A258561

Adjacent sequences:  A236519 A236520 A236521 * A236523 A236524 A236525

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 27 2014

STATUS

approved

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)