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 A209544 #23 Feb 01 2014 07:20:52 %S A209544 3,17,41,73,89,97,113,137,193,233,241,257,281,313,337,353,401,409,433, %T A209544 449,457,521,569,577,593,601,617,641,673,761,769,809,857,881,929,937, %U A209544 953,977,1009,1033,1049,1097,1129,1153,1193,1201,1217,1249,1289,1297,1321 %N A209544 Primes not expressed in form n<+>2, where operation <+> defined in A206853. %C A209544 Trivially every odd prime is expressed in form n<+>1 (cf. A208982). %C A209544 Are these related to A141174, A045390 or A007519? - _R. J. Mathar_, Mar 13 2012 %F A209544 For n>=2, a(n) = A007519(n-1). - Vladimir Shevelev, Apr 18 2012 %Y A209544 Cf. A205509, A205510, A205511, A205302, A205649, A205533, A122565, A206852, A206853, A206960, A007519, A209554, A182187. %K A209544 nonn,base %O A209544 1,1 %A A209544 _Vladimir Shevelev_ and _Peter J. C. Moses_, Mar 10 2012