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A235572 Number of (n+1)X(7+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise 0
7560, 270016, 11372978, 592286060, 35394045432, 2203799654900, 133088131619646, 7499484071020518, 388961736128317060, 18541452481590524532 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A235573

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A308913 A145313 A235961 * A206173 A205427 A252163

Adjacent sequences:  A235569 A235570 A235571 * A235573 A235574 A235575

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 12 2014

STATUS

approved

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Last modified September 22 02:48 EDT 2021. Contains 347605 sequences. (Running on oeis4.)