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 A160510 #24 Nov 24 2019 16:13:39 %S A160510 2,1,9,3,2,8,0,0,5,0,7,3,8,0,1,5,4,5,6,5,5,9,7,6,9,6,5,9,2,7,8,7,3,8, %T A160510 2,2,3,4,6,1,6,3,7,6,4,1,9,9,4,2,7,2,3,3,4,8,5,8,0,1,5,9,1,8,6,5,7,0, %U A160510 2,6,8,6,4,1,8,9,2,3,6,9,3,4,1,2,6,5,2,2,8,1,2,5,7,8,1,6,9,4,0,4,7,1,1,6,7 %N A160510 Decimal expansion of exp(Pi/4). %C A160510 Identified by Knuth as one of those "quantities that are frequently used in standard subroutines and in analysis of computer programs." - _Alonso del Arte_, Feb 03 2012 %D A160510 D. E. Knuth, The Art Of Computer Programming, Vol 1: Fundamental Algorithms, Addison-Wesley, 1968. %H A160510 Greg Egan, <a href="https://twitter.com/gregeganSF/status/1160461092973211648">Puzzle in which this value arises naturally</a> %H A160510 Grant Sanderson and Brady Haran, <a href="https://www.youtube.com/watch?v=6_yU9eJ0NxA">Darts in Higher Dimensions</a>, Numberphile video (2019) %e A160510 Exp(Pi/4) = 2.1932800507380154565597696592787382234616+ according to Knuth, appendix B, table 1. %p A160510 evalf(exp(Pi/4), 125); # _Alois P. Heinz_, Nov 17 2019 %t A160510 RealDigits[ E^(Pi/4), 10, 111][[1]] (* _Robert G. Wilson v_, May 29 2009 *) %o A160510 (PARI) exp(Pi/4) \\ _Charles R Greathouse IV_, Jan 04 2016 %Y A160510 Cf. A000796, A320428 (continued fraction), A329912 (Engel expansion). %K A160510 cons,nonn %O A160510 1,1 %A A160510 _Hagen von Eitzen_, May 16 2009 %E A160510 More terms from _Robert G. Wilson v_, May 29 2009