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 A089255 #17 Jan 26 2023 14:34:11 %S A089255 5,9,11,17,21,23,29,33,39,47,51,53,57,59,71,77,81,89,93,99,101,117, %T A089255 119,123,131,137,141,143,149,159,161,171,177,179,189,197,201,203,207, %U A089255 213,219,227,231,233,257,263,273,281,287,291,299,303,309,311,323,329,333 %N A089255 Odd numbers n such that 2*n-5 is a prime. %D A089255 M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988. %D A089255 Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997. %Y A089255 Cf. A089253, A002144. %K A089255 easy,nonn %O A089255 1,1 %A A089255 _Giovanni Teofilatto_, Dec 12 2003 %E A089255 Corrected sequence and extended by _Vincenzo Librandi_, Mar 30 2010 %E A089255 Offset corrected by _Arkadiusz Wesolowski_, Aug 09 2011