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(just those submitted by Crespi de Valldaura)
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Just showing those entries submitted by 'Crespi de Valldaura': (Click here to show all)

Photo credit: Patrick Kik
+ 132 can be expressed as the sum of 1, 2, 3, 4, 5, 6 distinct squares. [Crespi de Valldaura]




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