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.
%I A380901 #8 Mar 16 2025 08:08:05 %S A380901 16,243,78125,120393,166725,177957,316953,792585,1478925,40353607, %T A380901 55883275,59648043,77389375,82602975,88167807,106237047,107171875, %U A380901 114391875,122098275,128153375,130323843,147121275,157032603,177471875,189427875,190142667,203739375,217464975 %N A380901 Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = 2. %H A380901 Giovanni Resta, <a href="/A380901/b380901.txt">Table of n, a(n) for n = 1..208</a> %p A380901 with(numtheory): P:=proc(q,h) local k,n,v; v:=[]; %p A380901 for n from 1 to q do if n=add(n*k[2]/(k[1]+h),k=ifactors(n)[2]) then v:=[op(v),n]; fi; %p A380901 od; op(v); end: P(79350,2); %Y A380901 Cf. A380888, A380889, A380900, A380923 - A380928. %K A380901 nonn %O A380901 1,1 %A A380901 _Paolo P. Lava_, Mar 03 2025 %E A380901 a(22) - a(28) from _Giovanni Resta_, Mar 03 2025