A229777 Number of 5X5 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order

252, 2179956, 3062815568, 843211336888, 81937334158292, 3896490956821414, 110102810429666544, 2093314279759590565, 29136130649614970102, 315228320642171324718, 2770642691605055402356, 20456013945849864263232

Offset

1,1

Comments

Row 5 of A229774

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Sequence in context: A172557 A068275 A068287 * A083957 A172656 A172760

Adjacent sequences: A229774 A229775 A229776 * A229778 A229779 A229780

Keyword

nonn

Author

R. H. Hardin, Sep 29 2013

Status

approved