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 A055678 #10 Sep 11 2019 06:59:01 %S A055678 1,2,8,9,40,56,80,88,104,128,136,152,184,225,232,248,296,328,344,376, %T A055678 424,441,448,472,488,536,560,568,584,625,632,640,664,712,776,808,824, %U A055678 856,872,880,896,904,1016,1040,1048,1089,1096,1112,1192,1208,1250,1256 %N A055678 Integers not congruent to 0 (mod 6) that are divisible by the number of their divisors. %H A055678 Amiram Eldar, <a href="/A055678/b055678.txt">Table of n, a(n) for n = 1..10000</a> %t A055678 Do[If[Mod[n,6]!=0,If[IntegerQ[n/DivisorSigma[0,n]],Print[n]]],{n,1500}] %Y A055678 Intersection of A033950 and A047253. %K A055678 nonn %O A055678 1,2 %A A055678 _Robert G. Wilson v_, Jun 09 2000