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 A065815 #19 Feb 16 2025 08:32:45 %S A065815 1,3,40,185,1038,22610,179849 %N A065815 Numbers n such that initial n digits in decimal portion of the Euler-Mascheroni constant form a prime number. %H A065815 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConstantPrimes.html">Constant Primes</a> %H A065815 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Euler-MascheroniConstantDigits.html">Euler-Mascheroni Constant Digits</a> %H A065815 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a> %H A065815 <a href="/index/Con#constant_primes">Index entries related to "constant primes".</a> %Y A065815 Cf. A047658, A057563, A001620. %K A065815 base,nonn %O A065815 1,2 %A A065815 _Jason Earls_, Dec 06 2001 %E A065815 a(6) = 22610 from _Eric W. Weisstein_, Apr 25 2006 %E A065815 a(7) = 179849 from _Eric W. Weisstein_, Jun 01 2011