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 A290799 #11 Aug 11 2017 20:27:43 %S A290799 4,4,0,4,5,5,1,4,2,6,5,2,1,3,0,6,6,6,4,6,6,4,4,6,5,4,0,3,4,4,4,0,1,3, %T A290799 2,2,0,6,1,5,1,4,0,6,2,1,0,0,6,1,5,1,0,4,3,3,6,4,0,1,1,6,5,2,5,1,4,6, %U A290799 4,4,5,0,1,4,2,6,1,2,0,6,6,3,3,5,2,2,0,1 %N A290799 Coefficients in 7-adic expansion of sqrt(-5). %H A290799 Seiichi Manyama, <a href="/A290799/b290799.txt">Table of n, a(n) for n = 0..10000</a> %F A290799 a(n) = 6 - A290798(n) for n > 0. %Y A290799 Cf. A290798, A290809. %K A290799 nonn %O A290799 0,1 %A A290799 _Seiichi Manyama_, Aug 10 2017