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 A216927 #14 Aug 05 2013 01:23:02 %S A216927 588455,1010735,2276351,2756159,4107455,4874639,5669279,6539819, %T A216927 8421335,13670855,16184663,16868159,21408695,23176439,24685199, %U A216927 25111295,26636687,30071327,34347599,34541639,36149399,36485015,38999519,39715319,42624911,43134959,49412285 %N A216927 Lucas-Carmichael numbers with 5 prime factors. %H A216927 Donovan Johnson, <a href="/A216927/b216927.txt">Table of n, a(n) for n = 1..1000</a> %e A216927 a(1) = 588455 = 5*7*17*23*43 %Y A216927 Cf. A006972 (Lucas-Carmichael numbers), A216925, A216926, A217002, A217003, A217091. %K A216927 nonn %O A216927 1,1 %A A216927 _Tim Johannes Ohrtmann_, Sep 20 2012