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 A181141 #14 Nov 01 2018 21:32:20 %S A181141 7,13,31,43,269,353,383,619,829,877,4957,5711,8317,21739,24029,38299 %N A181141 Numbers k such that (8^k + 7^k)/15 is prime. %C A181141 Terms 21739 and 24029 were found by Lelio R. Paula in February and April 2009. Term 38299 was found by Jean-Louis Charton in October 2010 corresponding to a probable prime with 34587 digits. %C A181141 a(17) > 10^5. - _Robert Price_, Dec 29 2012 %H A181141 <a href="http://www.primenumbers.net/prptop/searchform.php?form=%288%5En%2B7%5En%29%2F15&action=Search">Top probable primes of form (8^n+7^n)/15</a> %o A181141 (PARI) is(n)=isprime((8^n+7^n)/15) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A181141 See also A062574. %K A181141 hard,nonn %O A181141 1,1 %A A181141 _Jean-Louis Charton_, Oct 06 2010