# ZarankiewiczDB,

an online database of Zarankiewicz numbers.

### Matrix for z(20,23)

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

Scaffold: $p=5$, $q=4$, $\mathbf{m}=(4,4,3,2,2)$, $\mathbf{n}=(4,4,4,4)$, $m_O = 2$, $n_O = 0$.

(66.394567635 seconds, score = 103, 610048 recursive calls, max depth = 22)

weight = 103, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

Related: Matrix 2080