A202739 Number of nX5 0..1 arrays with row sums equal and column sums unequal to adjacent columns

2, 54, 638, 6870, 75302, 827502, 8870150, 93402390, 969837470, 10133577294, 104168885570, 1073411553030, 11008021249370, 112437630047286, 1151811769082618, 11687452535796630, 118872499759443950

Offset

1,1

Comments

Column 5 of A202742

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Sequence in context: A280754 A113028 A200195 * A055024 A057411 A157058

Adjacent sequences: A202736 A202737 A202738 * A202740 A202741 A202742

Keyword

nonn

Author

R. H. Hardin Dec 23 2011

Status

approved