A201276 Number of nX7 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other

3, 27, 54, 740, 2827, 3113, 27008, 71704, 59070, 408600, 894812, 621910, 3704174, 7087046, 4373879, 23558696, 41171126, 23396689, 116650532, 190010902, 101247815, 476808796, 736407602, 373431803, 1678517670, 2482516953

Offset

1,1

Comments

Column 7 of A201277

Links

R. H. Hardin, Table of n, a(n) for n = 1..82

Example

Some solutions for n=5
..0..0..0..0..0..1..2....0..0..0..0..0..0..2....0..0..0..0..0..0..1
..0..0..0..1..1..1..2....0..0..1..1..1..1..2....0..0..0..1..1..1..2
..0..0..0..1..1..1..2....0..1..1..1..2..2..2....0..0..0..1..1..2..2
..1..1..1..1..2..2..2....0..1..1..1..2..2..2....1..1..1..1..1..2..2
..1..2..2..2..2..2..2....0..1..1..2..2..2..2....1..2..2..2..2..2..2

Crossrefs

Sequence in context: A147267 A071183 A025414 * A053360 A176963 A204046

Adjacent sequences: A201273 A201274 A201275 * A201277 A201278 A201279

Keyword

nonn

Author

R. H. Hardin Nov 29 2011

Status

approved