[seqfan] Re: Sequences about product or sum of digits of n

David Corneth davidacorneth at gmail.com
Sun Jul 3 21:58:55 CEST 2016

Glad to hear! I think A055933 (Product of digits (not counting zeros) of n
divides sum of digits of n.) and A117720 (
Numbers for which the sum of the digits is the square root of the product
of their digits.) are particulary nice to summarize similarily. Right? Any
other sequences?

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