[seqfan] both n and n^2 use just digits (2,3,5,7}
Zak Seidov
zakseidov at mail.ru
Mon Aug 15 13:35:26 CEST 2016
Are {5,235,72335}
the only numbers n
such that both n and n^2 use just digits (2,3,5,7}?
Cf. A191486, A275971.
zak
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