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 A321079 #13 Aug 19 2019 10:20:00 %S A321079 7,6,0,6,10,1,5,2,3,3,7,1,3,6,9,2,0,5,0,2,0,8,5,4,0,0,7,0,8,8,9,4,4,5, %T A321079 3,0,10,4,1,2,7,9,4,5,7,9,1,10,5,2,2,0,6,2,1,9,1,3,9,8,9,10,5,10,8,1, %U A321079 9,5,8,9,7,9,3,0,7,5,10,6,0,5,9,8,0,8,9,7,10 %N A321079 Digits of one of the two 11-adic integers sqrt(5). %C A321079 This square root of 5 in the 11-adic field ends with digit 7. The other, A321078, ends with digit 4. %H A321079 Seiichi Manyama, <a href="/A321079/b321079.txt">Table of n, a(n) for n = 0..10000</a> %H A321079 Wikipedia, <a href="https://en.wikipedia.org/wiki/P-adic_number">p-adic number</a> %F A321079 a(n) = (A321077(n+1) - A321077(n))/11^n. %F A321079 For n > 0, a(n) = 10 - A321078(n). %e A321079 ...214A0354498807004580205029631733251A6067. %o A321079 (PARI) a(n) = truncate(-sqrt(5+O(11^(n+1))))\11^n %Y A321079 Cf. A321077, A321078. %K A321079 nonn,base %O A321079 0,1 %A A321079 _Jianing Song_, Oct 27 2018