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.

11520, 462970, 17385844, 610630403, 20627269098, 668463714817, 21144229954815, 652556241912311, 19847922853016156, 595359726112080244, 17710417384465606528, 522920157246017280935, 15370758158920152632621

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