cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A332736 Numbers k such that the sum of the norm of divisors of k in Gaussian integers is divisible by k.

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%I A332736 #8 Feb 22 2020 12:50:44
%S A332736 1,14,15,30,60,70,120,210,315,350,630,1260,1612,1680,1860,2520,4095,
%T A332736 4588,5080,5250,5535,8190,10850,11070,11284,15240,16380,17520,22140,
%U A332736 24180,32760,34125,38745,39060,40880,42000,42720,43216,44280,45720,54243,56420,59644
%N A332736 Numbers k such that the sum of the norm of divisors of k in Gaussian integers is divisible by k.
%H A332736 Amiram Eldar, <a href="/A332736/b332736.txt">Table of n, a(n) for n = 1..2500</a>
%e A332736 14 is a term since A317797(14) = 350 is divisible by 14.
%t A332736 Select[Range[10000], Divisible[Plus @@ (Abs[Divisors[#, GaussianIntegers -> True]]^2), #] &]
%Y A332736 Cf. A046762, A317797.
%K A332736 nonn
%O A332736 1,2
%A A332736 _Amiram Eldar_, Feb 21 2020