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 A375820 #19 May 29 2025 10:41:05 %S A375820 3,1,4,1,5,0,9,4,3,3,9,6,2,2,6,4,1,5,0,9,4,3,3,9,6,2,2,6,4,1,5,0,9,4, %T A375820 3,3,9,6,2,2,6,4,1,5,0,9,4,3,3,9,6,2,2,6,4,1,5,0,9,4,3,3,9,6,2,2,6,4, %U A375820 1,5,0,9,4,3,3,9,6,2,2,6,4,1,5,0,9,4,3,3,9,6,2,2,6,4,1,5,0,9,4,3 %N A375820 Decimal expansion of 333/106. %C A375820 Approximation of Pi accurate up to five digits. %C A375820 Periodic of period [4, 1, 5, 0, 9, 4, 3, 3, 9, 6, 2, 2, 6] of length 13. %D A375820 Alfred S. Posamentier, Math Charmers, Tantalizing Tidbits for the Mind, Prometheus Books, NY, 2003, page 154-155. %D A375820 David Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, Revised edition 1987. See p. 49. %H A375820 Michael A. B. Deakin and H. Lausch, <a href="https://doi.org/10.2307/3620398">The Bible and Pi</a>, The Mathematical Gazette, 82(494), 162-166 (1998). %H A375820 Wikipedia, <a href="https://en.wikipedia.org/wiki/Adriaan_Metius">Adriaan Metius</a>. %H A375820 <a href="/index/Rec#order_13">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,0,0,0,0,0,0,0,0,1). %F A375820 Equals (2*355 - 377)/(2*113 - 120), where A068079 = 355/113 and A210622 = 377/120 [Adriaen Metius]. See Wells. %e A375820 3.1415094339622641509433962264150943396226415... %t A375820 RealDigits[333/106,10,100][[1]] %o A375820 (Python) %o A375820 def A375820(n): return (2, 2 ,6, 4, 1, 5, 0, 9, 4, 3, 3, 9, 6)[n%13] if n>2 else 5-(n<<1) # _Chai Wah Wu_, Aug 30 2024 %Y A375820 Cf. A000796, A068079, A210622. %K A375820 nonn,cons,easy %O A375820 1,1 %A A375820 _Stefano Spezia_, Aug 30 2024