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 A376304 #8 Oct 02 2024 14:40:57 %S A376304 1194649,12327121,3914864773,5654273717,26092328809,58706246509, %T A376304 74795779241,237865367741,467032496113,601401837037,1101047056201, %U A376304 1629827375177,2327330361721,3427506518801,3950198906473,6151420925105,7816904988985,16034307692677 %N A376304 Strong pseudoprimes to base 2 that are not squarefree. %C A376304 The intersection of A013929 and A001262. %C A376304 All members of this sequence are divisible by a square of a Wieferich prime. %H A376304 Shyam Sunder Gupta, <a href="/A376304/b376304.txt">Table of n, a(n) for n = 1..626</a> %e A376304 a(5) = 26092328809 = 21841 * 1093^2 is a strong pseudoprime that is not squarefree. %Y A376304 Cf. A001262, A013929, A158358, A001220. %K A376304 nonn %O A376304 1,1 %A A376304 _Shyam Sunder Gupta_, Sep 20 2024