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cnoocy: green a-e ligature (Default)
(boing!) Cnoocy Mosque O'Witz

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Feb. 20th, 2016

cnoocy: green a-e ligature (Default)
https://oeis.org/A269131

Composite numbers whose largest prime factor are less than their second-largest prime factor's square, counting by multiplicity so that the factors of 18 are 2, 3, 3

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