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 A115377 #11 Feb 16 2025 08:33:00 %S A115377 55,97,225,11260,11540 %N A115377 Numbers n such that the first n digits of sqrt(2) form a prime. %H A115377 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConstantPrimes.html">Constant Primes</a> %H A115377 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PythagorassConstantDigits.html">Pythagoras's Constant Digits</a> %H A115377 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a> %e A115377 First Pythagorean prime is 1414213562373095048801688724209698078569671875376948073, which has 55 digits. %Y A115377 Cf. A002193. %K A115377 nonn,base,more %O A115377 1,1 %A A115377 _Eric W. Weisstein_, Jan 21 2006