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 A057942 #20 Apr 03 2023 10:36:09 %S A057942 645,25761,212421,332949,656601,6212361,63560685,413435121,1112691009, %T A057942 1121315385,1239702465,2851612221,5616154545,6454103601,6689540901, %U A057942 9691152801,9728582781,11970358401,12028438605,15076352901,17402551365 %N A057942 Pseudoprimes k to base 2 such that k-2 and k+2 are primes. %C A057942 B-file extended using Feitsma's tables of pseudoprimes. - _Giovanni Resta_, Aug 20 2018 %H A057942 Giovanni Resta, <a href="/A057942/b057942.txt">Table of n, a(n) for n = 1..7000</a> (first 73 terms from Amiram Eldar) %H A057942 C. K. Caldwell, <a href="https://t5k.org/glossary/page.php?sort=Pseudoprime">Pseudoprimes</a> %H A057942 Jan Feitsma and William Galway, <a href="http://www.cecm.sfu.ca/Pseudoprimes/index-2-to-64.html">Tables of pseudoprimes and related data</a> %H A057942 Andrzej Rotkiewicz, <a href="http://dml.cz/dmlcz/137472">On pseudoprimes having special forms and a solution of K. Szymiczek's problem</a>, Acta Mathematica Universitatis Ostraviensis, Vol. 13, No. 1 (2005), pp. 57-71. %H A057942 <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a> %Y A057942 Cf. A001567. %K A057942 nonn %O A057942 1,1 %A A057942 _Patrick De Geest_, Oct 15 2000 %E A057942 More terms from _Don Reble_, Nov 03 2001