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 A083509 #11 Aug 23 2014 15:11:01 %S A083509 25,121,125,127,128,216,289,343,347,625,736,1022,1024,1285,1296,1792, %T A083509 2048,2187,2349,2500,2501,2502,2503,2504,2505,2506,2507,2508,2509, %U A083509 2592,2737,2916,3125,3281,3375,3378,3685,3864,3972,4088,4096,4106,4167,4536,4624 %N A083509 Friedman numbers that involve the "^" sign. %e A083509 121 is a member as 121 = 11^2. but 126 is not a member as 126 = 21*6 does not involve "^" sign. %Y A083509 Cf. A036057. %K A083509 base,nonn %O A083509 1,1 %A A083509 _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 05 2003 %E A083509 Corrected and extended by _Arkadiusz Wesolowski_, Jun 02 2013