ZarankiewiczDB,

an online database of Zarankiewicz numbers.

z(5,8) = 17

 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

lower bound = 17, submitted on April 22nd, 2016 (link, raw)

By the convex optimisation bound with 7 columns of weight 2 and 1 column of weight 3.

upper bound = 17, submitted on April 22nd, 2016 (link)

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

upper bound = 17, submitted on April 22nd, 2016 (link)

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