ZarankiewiczDB,

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z(13,22) = 69

111111
111111
11111
11111
11111
11111
11111
11111
11111
11111
11111
111111
111111

Scaffold: $p=5$, $q=2$, $\mathbf{m} = (2,2,2,2,2)$, $\mathbf{n} = (5,4)$, $m_O=0$, $n_O=7$.

(139.992167999 seconds, score = 69, 974505 recursive calls, max depth = 33)

weight = 69, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

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