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- 14:27, 21 April 2019 diff hist -7 Template:Classes of natural numbers
- 14:26, 21 April 2019 diff hist -26 Template:Classes of natural numbers the centered 12-gonal numbers are exactly the star numbers
- 14:24, 21 April 2019 diff hist +33 Template:Classes of natural numbers
- 14:23, 21 April 2019 diff hist +225 Template:Classes of natural numbers