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 A101456 #8 Sep 06 2018 15:44:45 %S A101456 5,7,7,2,5,5,3,2,5,2,2,2,3,2,5,3,3,5,3,2,3,5,5,7,7,2,3,7,7,2,7,7,7,7, %T A101456 3,7,3,2,7,7,5,3,7,2,7,2,5,5,2,3,2,2,7,3,7,2,3,5,3,2,5,3,5,3,3,3,7,2, %U A101456 3,7,3,3,7,7,3,7,7,3,2,7,2,5,5,2,5,2,7,7,3,5,2,3,5,7,5,3,2,3,3,5,7,7,5,2,2 %N A101456 Prime digits in the decimal expansion of Euler's constant (or Euler-Mascheroni constant) gamma. %H A101456 G. C. Greubel, <a href="/A101456/b101456.txt">Table of n, a(n) for n = 0..10000</a> %t A101456 Select[ RealDigits[ EulerGamma, 10, 275][[1]], PrimeQ[ # ] &] (* _Robert G. Wilson v_, Jan 21 2005 *) %Y A101456 Cf. A001620, A073264, A073246. %K A101456 base,easy,nonn %O A101456 0,1 %A A101456 Sebastian Gutierrez (sgutierr(AT)alum.mit.edu), Jan 20 2005 %E A101456 More terms from _Robert G. Wilson v_, Jan 21 2005