ZarankiewiczDB,

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

z(15,18) = 69

By the density principle on z(14,18).

upper bound = 69, submitted on April 22nd, 2016 (link)

By deleting 6 rows and 3 columns from the finite projective plane of order 4.

lower bound = 69, submitted on April 22nd, 2016 (link)

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