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 A083285 #5 Dec 15 2017 17:36:19 %S A083285 6,10,21,319,403,529,667,799,1003,1513,1537,2623,2809,4183,16459, %T A083285 23707,24613,31309,34117,35179,35653,37399,37669,39913,40723,43357, %U A083285 46243,46513,49183,50689,53293,55417,55747,56257,59287,60547,61069,61093 %N A083285 Numbers n such that n and n+4 are both brilliant numbers (A078972). %e A083285 a(5)=403 because 403=13*31 and 407=11*37. %Y A083285 Cf. A078972. %K A083285 base,nonn %O A083285 1,1 %A A083285 _Jason Earls_, Jun 03 2003