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 A135371 #18 Jun 15 2024 05:49:54
%S A135371 3,18,80,316,1124,3976,13770,46398,155174,512700,1679218,5454768,
%T A135371 17617664,56578816,180896064,576041630,1827788446,5781493590,
%U A135371 18236550884,57379347420,180130119286,564319058202,1764618506934,5508483994106,17168384214168,53431296170784
%N A135371 a(n) = prime(3^(n + 1)) - prime(3^n).
%H A135371 Amiram Eldar, <a href="/A135371/b135371.txt">Table of n, a(n) for n = 0..35</a> (calculated from the b-file at A038833)
%F A135371 a(n) = A038833(n+1) - A038833(n). - _Jinyuan Wang_, Nov 14 2020
%t A135371 Table[Prime[3^(n + 1)] - Prime[3^n], {n, 0, 26}]
%o A135371 (PARI) a(n) = prime(3^(n + 1)) - prime(3^n); \\ _Michel Marcus_, Nov 15 2020
%Y A135371 Cf. A000040, A038833, A110896, A135373.
%K A135371 nonn
%O A135371 0,1
%A A135371 _Marvin Ray Burns_, Dec 09 2007
%E A135371 a(23)-a(25) from _Jinyuan Wang_, Nov 14 2020