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 A332379 #16 Feb 16 2020 00:46:59 %S A332379 11,12,14,16,20,22,26,28,29,30,32,34,38,40,44,46,50,52,56,58,62,64,68, %T A332379 70,74,76,80,82,83,84,86,88,92,94,98,100,104,106,110,112,116,118,122, %U A332379 124,128,130,134,136,140,142,146,148,152,154,158,160,164,166,170,172,176,178,182,184,188,190,194,200 %N A332379 Numbers of the form 3^k + prime, with k > 1. %H A332379 Alois P. Heinz, <a href="/A332379/b332379.txt">Table of n, a(n) for n = 1..10000</a> %H A332379 Christian Elsholtz, Florian Luca, and Stefan Planitzer, <a href="https://doi.org/10.1007/s11139-017-9972-8">Romanov type problems</a>, The Ramanujan Journal 47.2 (2018): 267-289. %p A332379 q:= n-> ormap(k-> isprime(n-3^k), [$2..ilog[3](n)]): %p A332379 select(q, [$1..200])[]; # _Alois P. Heinz_, Feb 14 2020 %Y A332379 Cf. A218044. %K A332379 nonn %O A332379 1,1 %A A332379 _N. J. A. Sloane_, Feb 14 2020