A235569 Number of (n+1)X(4+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

398, 4670, 53728, 599834, 6353336, 63238254, 592286060, 5248500942, 44325853698, 359137867202, 2808635827492, 21308292745362, 157513614896438, 1138612324985928, 8073652014782322, 56303627107020326, 387036789065682550

Offset

1,1

Comments

Column 4 of A235573

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..1..1..1..1..1....0..0..1..0..0....1..0..0..0..0....1..1..0..1..1
..0..1..0..0..0....1..0..0..1..1....0..0..0..1..0....1..0..0..0..0
..0..0..1..0..1....1..1..1..1..1....0..1..1..0..1....0..0..1..1..0
..1..1..1..0..1....1..0..0..1..1....1..0..1..1..0....1..0..1..0..1

Crossrefs

Sequence in context: A236713 A235958 A187515 * A261768 A274446 A253598

Adjacent sequences: A235566 A235567 A235568 * A235570 A235571 A235572

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved