A202739 Number of n X 5 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

Author

R. H. Hardin, Dec 23 2011

Keywords

• nonn

Comments

Column 5 of A202742.

Examples

			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
		

Links

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

Crossrefs

Cf. A202742.