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 A128253 #10 Jul 25 2015 22:00:58 %S A128253 6,15,20,28,33,35,52,55,63,65,76,77,85,88,91,95,115,117,119,133,136, %T A128253 143,145,153,155,161,171,184,187,203,207,209,217,221,232,235,247,248, %U A128253 253,261,279,287,296,299,301,305,319,323,328,329,333,341,344,369,370,371 %N A128253 Primitive elements of A092671: numbers that may be the largest denominator in an Egyptian fraction for 1. %C A128253 "Primitive" terms of A092671 are the terms larger than 1 which are not divisible by any smaller member of that sequence, except for 1. %Y A128253 Cf. A092671. %K A128253 nonn %O A128253 1,1 %A A128253 _Franklin T. Adams-Watters_, Feb 20 2007 %E A128253 Definition clarified by _M. F. Hasler_, Jul 24 2015