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Matrix for z(5,5 | 3,3)

1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111

Found by the quotient matrix algorithm.

(838.845566686 seconds, score = 60, 9276201 recursive calls, max depth = 13)

The expansion of Matrix 298. Equals z(5,5 | S_3 ∪ {O}).

weight = 60, submitted by Andrew Kay on April 22nd, 2016 (link, raw)