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 A152549 #15 Jul 09 2025 04:30:27 %S A152549 2,6,3,0,9,2,9,7,5,3,5,7,1,4,5,7,4,3,7,0,9,9,5,2,7,1,1,4,3,4,2,7,6,0, %T A152549 8,5,4,2,9,9,5,8,5,6,4,0,1,3,1,8,8,0,4,2,7,8,7,0,6,5,4,9,4,3,8,3,8,6, %U A152549 8,5,2,0,1,3,8,0,9,1,4,8,0,5,0,6,1,1,7,2,6,8,8,5,4,9,4,5,1,7,4 %N A152549 Decimal expansion of log_3(18). %C A152549 Hausdorff dimension of Jeannine Mosely's origami model of Menger's sponge. %H A152549 Vincenzo Librandi, <a href="/A152549/b152549.txt">Table of n, a(n) for n = 1..1000</a> %H A152549 Seb Perez-D, <a href="http://images.google.com/images?q=Cross+crosslet">Illustration of sponge (1)</a> %H A152549 Seb Perez-D, <a href="http://www.flickr.com/photos/sbprzd/4052575863/">Illustration of sponge (2)</a> %H A152549 Seb Perez-D, <a href="http://theseblog.free.fr/fsppa.php?q=4104357940534061060aaf598b44">Illustration of sponge (3)</a> %H A152549 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A152549 Equals 2+A102525. - _R. J. Mathar_, Oct 02 2023 %e A152549 2.6309297535714574370995271143427608542995856401318804278706... %t A152549 RealDigits[Log[3, 18], 10, 120][[1]] (* _Vincenzo Librandi_, Aug 29 2013 *) %o A152549 (PARI) log(18)/log(3) \\ _Charles R Greathouse IV_, Aug 06 2020 %K A152549 nonn,cons %O A152549 1,1 %A A152549 _N. J. A. Sloane_, Oct 28 2009, based on a posting by _Michael Kleber_ to the Math Fun Mailing List