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 A270011 #40 Feb 16 2025 08:33:30 %S A270011 1,2,3,5,15,31,53,100,108,188,328,568,816,1013,1912,4008,4155,8686, %T A270011 10747 %N A270011 Numbers n such that 3*14^n-1 is prime. %H A270011 J. Brillhart, D. H. Lehmer and J. L. Selfridge, <a href="http://dx.doi.org/10.1090/S0025-5718-1975-0384673-1">New primality criteria and factorizations of 2^m+-1</a>, Math. Compl. 29 (1975) 620-647. %H A270011 John Eisenmann, <a href="http://ostracodfiles.com/primes14/primes.php">Prime Numbers of the Form a * 14^b - 1</a>. %H A270011 Victor Shoup, <a href="http://www.shoup.net/ntb/ntb-v2.pdf">A Computational Introduction to Number Theory and Algebra</a>, 2008, page 348. %H A270011 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LucasSequence.html">Lucas Sequence</a>. %H A270011 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Rabin-MillerStrongPseudoprimeTest.html">Rabin-Miller Strong Pseudoprime Test</a>. %o A270011 (PARI) is(n)=ispseudoprime(3*14^n-1) \\ _Charles R Greathouse IV_, Jun 13 2017 %K A270011 nonn,more %O A270011 0,2 %A A270011 _Jack P. Eisenmann_, May 23 2016