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 A181747 #12 Aug 28 2025 06:11:20 %S A181747 1,3,5,11,17,29,41,59,71,101,107,137,149,179,191,197,227,239,269,281, %T A181747 311,347,419,431,461,521,569,599,617,641,659,809,821,827,857,881,1019, %U A181747 1031,1049,1061,1091,1151,1229,1277,1289,1301,1319,1427,1451,1481,1487,1607 %N A181747 Odd noncomposite numbers that are the difference of 2 primes. %C A181747 1 together with lesser of twin primes. %Y A181747 Cf. A001359. %K A181747 nonn,less,changed %O A181747 1,2 %A A181747 _Juri-Stepan Gerasimov_, Nov 08 2010 %E A181747 Definition and terms corrected by _R. J. Mathar_, Oct 15 2011