A229798 Number of 5X5 0..n arrays with rows and columns in lexicographically nondecreasing order.
24520, 318174607, 348053502590, 83399309397669, 7470491620551006, 337176110123479647, 9191448163080152260, 170263099219981493623, 2323791090717304237514, 24760438397023153230241, 214990023150964441381574
Offset: 1
Keywords
Examples
Some solutions for n=1 ..0..0..0..0..1....0..0..0..0..1....0..0..0..0..1....0..0..1..1..1 ..0..0..0..1..0....0..0..0..1..1....0..0..1..1..1....0..1..0..0..1 ..0..1..1..1..0....0..0..1..0..0....0..1..0..0..1....1..0..0..0..0 ..0..1..1..1..0....0..1..0..1..0....0..1..1..1..1....1..0..0..1..0 ..1..0..0..1..1....1..1..1..0..0....1..0..0..0..0....1..1..1..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..17
Comments