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 A061422 #27 Nov 01 2018 21:36:09 %S A061422 1,3,7,237,1885,51381,75765 %N A061422 Numbers k such that 2^(k-1) + k is prime. %C A061422 No other terms below 300000. - _Giovanni Resta_, Nov 12 2012 %C A061422 a(8) > 500000. - _Robert Price_, May 24 2014 %D A061422 J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 237, p. 66, Ellipses, Paris 2008. %H A061422 K. S. Brown, <a href="http://www.mathpages.com/home/kmath006/kmath006.htm">The Sum of the Prime Factors of N</a>. MathPages.com %o A061422 (PARI) is(n)=isprime(2^(n-1)+n) \\ _Charles R Greathouse IV_, May 22 2017 %Y A061422 Cf. A061421. %Y A061422 Equals A100359(n) + 1. %K A061422 hard,nonn %O A061422 1,2 %A A061422 _Jason Earls_, May 02 2001 %E A061422 H. Zeisel found the probable prime 1885. - _Benoit Cloitre_, Jun 03 2002 %E A061422 New term 51381 from Nuutti Kuosa (see MathPages link). - _Max Alekseyev_, Feb 08 2009 %E A061422 Deleted an incorrect conjecture. - _N. J. A. Sloane_, Dec 27 2009 %E A061422 a(7) from _Giovanni Resta_, Nov 12 2012