A235961 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 columnwise and nonincreasing rowwise

7560, 176420, 3311312, 59037352, 997114552, 16500794898, 267591383236, 4292672074802, 68206975579218, 1077169051968340, 16927257076479028, 265101072902208072, 4140802701438271022, 64556448436549241648

Offset

1,1

Comments

Column 7 of A235962

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

Some solutions for n=2
..0..0..1..0..1..0..0..1....0..0..1..1..0..0..0..1....0..0..0..0..0..0..0..0
..0..0..0..0..0..0..1..1....0..1..0..0..1..1..1..0....0..1..0..0..0..1..0..1
..0..1..0..0..0..1..1..1....0..0..0..0..0..1..0..0....0..0..0..0..1..1..1..1

Crossrefs

Sequence in context: A190108 A308913 A145313 * A235572 A351382 A206173

Adjacent sequences: A235958 A235959 A235960 * A235962 A235963 A235964

Keyword

nonn

Author

R. H. Hardin, Jan 17 2014

Status

approved