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 A120692 #2 Mar 31 2012 13:21:32 %S A120692 20,156,255,609,1295,2385,4015,4095,6545,6984,9919,9999,12656,14385, %T A120692 14625,20724,20735,28545,32424,37791,38335,38415,48464,50369,50609, %U A120692 64911,65455,69804,82225,83265,83505,96016,97056,97636,102575,104351 %N A120692 Primitive elements of A065607. %e A120692 156 is part of the triple 60,65,156. Although 600 is part of the primitive triple 168,175,600, it is excluded because it is a multiple of 20. %Y A120692 Cf. A065607, A120693. %K A120692 nonn %O A120692 1,1 %A A120692 _Franklin T. Adams-Watters_, Jun 27 2006