A250498 Number of (n+2)X(2+2) 0..1 arrays with nondecreasing medians of every three consecutive values in every row and column

2744, 23096, 181058, 1410255, 9788132, 64023155, 409593826, 2524591167, 15066718470, 88100873940, 505277709506, 2845393524899, 15788358013248, 86483717929940, 468157706230284, 2507909862945678, 13310785933432322

Offset

1,1

Comments

Column 2 of A250504

Links

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

Example

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

Crossrefs

Sequence in context: A262820 A262817 A250821 * A180695 A236316 A114768

Adjacent sequences: A250495 A250496 A250497 * A250499 A250500 A250501

Keyword

nonn

Author

R. H. Hardin, Nov 24 2014

Status

approved