Re: [math-fun] integers that are either square or thrice a square, where do such beasts hide?

They're precisely the norms of Eisenstein integers with rational arguments. -- APG

Sent: Wednesday, August 29, 2018 at 5:01 PM From: "Wouter Meeussen" <wouter.meeussen@telenet.be> To: math-fun <math-fun@mailman.xmission.com>, seqfan <seqfan@list.seqfan.eu> Subject: [math-fun] integers that are either square or thrice a square, where do such beasts hide?

do they occur anywhere naturally? in combinatorics or in number theory? I bumped into them by accident looking at bracelet-stuff.

Wouter. _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun