A200533 Number of nX7 0..2 arrays with every row and column running average nondecreasing rightwards and downwards

87, 1873, 32556, 494555, 6820330, 87098434, 1056792824, 12348422785, 140068079857, 1551453118671, 16861973522704, 180469353488204, 1907201493832312, 19944555935687461, 206749466424763994

Offset

1,1

Comments

Column 7 of A200534

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

Some solutions for n=4
..0..0..0..0..0..0..2....0..0..0..1..1..1..2....0..0..0..0..0..1..1
..0..0..0..0..0..1..2....0..0..0..1..1..1..2....0..0..0..0..1..2..2
..0..0..0..1..1..2..2....0..0..0..1..1..2..2....0..0..0..2..1..2..2
..0..2..2..2..2..2..2....0..1..1..1..2..2..2....0..2..1..1..2..2..2

Crossrefs

Sequence in context: A082955 A201154 A171344 * A324112 A116269 A017803

Adjacent sequences: A200530 A200531 A200532 * A200534 A200535 A200536

Keyword

nonn

Author

R. H. Hardin Nov 18 2011

Status

approved