ZarankiewiczDB,

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z(13,17) = 59

11111
11111
11111
11111
11111
11111
1111
1111
1111
1111
1111
1111
11111

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

(82.59980668 seconds, score = 59, 894745 recursive calls, max depth = 22)

weight = 59, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

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