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 A343181 #12 Dec 30 2024 01:14:36 %S A343181 1,110,1101100,110110011100100,1101100111001001110110001100100, %T A343181 110110011100100111011000110010011101100111001000110110001100100 %N A343181 Binary word formed from first 2^n-1 terms of paper-folding sequence A014577. %C A343181 Take a sheet of paper, and fold the right edge up and onto the left edge. Do this n times. and unfold. Write a 1 for every valley and a 0 for every ridge. %C A343181 This appears on the first page of Davis-Knuth (1970/2010) and in many subsequent papers on paper-folding. %C A343181 a(7) is too large to include in the DATA section. %D A343181 Chandler Davis and Donald E. Knuth, Number Representations and Dragon Curves -- I and II, Journal of Recreational Mathematics, volume 3, number 2, April 1970, pages 66-81, and number 3, July 1970, pages 133-149. Reprinted in Donald E. Knuth, Selected Papers on Fun and Games, CSLI Publications, 2010, pages 571-614. %D A343181 Rémy Sigrist and N. J. A. Sloane, Two-Dimensional Paper-Folding, Manuscript in preparation, May 2021. %H A343181 Chandler Davis and Donald E. Knuth, <a href="/A005811/a005811.pdf">Number Representations and Dragon Curves</a>, Journal of Recreational Mathematics, volume 3, number 2, April 1970, pages 66-81, and number 3, July 1970, pages 133-149. [Cached copy, with permission] %Y A343181 When converted to base 10 we get A337580. %Y A343181 Cf. A014577, A343182. %K A343181 nonn %O A343181 1,2 %A A343181 _N. J. A. Sloane_, May 05 2021