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.

7560, 270016, 11372978, 592286060, 35394045432, 2203799654900, 133088131619646, 7499484071020518, 388961736128317060, 18541452481590524532

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 * A351382 A206173 A205427

Adjacent sequences: A235569 A235570 A235571 * A235573 A235574 A235575

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved