ZarankiewiczDB,

an online database of Zarankiewicz numbers. home; recent; tables; submit; theorems & references

z(6,13) = 27

111
11
11
11
11
11
11
11
11
11
11
11
11

Found by the general algorithm.

(0.061160846 seconds, score = 27, 200 recursive calls, max depth = 26)

lower bound = 27, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

By Roman's bound with $p = 2$. [Rom75]

upper bound = 27, submitted on April 22nd, 2016 (link)

Submit a result or comment?