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 A324026 #18 Mar 11 2023 07:55:59 %S A324026 4,1,4,0,2,3,2,1,3,1,1,4,1,1,2,1,2,2,2,0,1,1,3,0,4,3,2,4,4,4,1,1,3,0, %T A324026 3,4,3,2,0,3,0,3,3,4,2,0,0,1,4,2,1,0,3,3,0,1,0,2,0,2,3,3,2,0,0,1,2,1, %U A324026 3,3,4,3,0,2,1,0,0,0,0,4,1,1,3,2,1,2,1,3 %N A324026 Digits of one of the two 5-adic integers sqrt(6) that is related to A324024. %C A324026 This square root of 6 in the 5-adic field ends with digit 4. The other, A324025, ends with digit 1. %H A324026 Wikipedia, <a href="https://en.wikipedia.org/wiki/P-adic_number">p-adic number</a> %F A324026 a(n) = (A324024(n+1) - A324024(n))/5^n. %F A324026 For n > 0, a(n) = 4 - A324025(n). %F A324026 Equals A210850*A324029 = A210851*A324030, where each A-number represents a 5-adic number. %e A324026 The solution to x^2 == 6 (mod 5^4) such that x == 4 (mod 5) is x == 109 (mod 5^4), and 109 is written as 414 in quinary, so the first four terms are 4, 1, 4 and 0. %o A324026 (PARI) a(n) = truncate(-sqrt(6+O(5^(n+1))))\5^n %Y A324026 Cf. A324023, A324024. %Y A324026 Digits of 5-adic square roots: %Y A324026 A324029, A324030 (sqrt(-6)); %Y A324026 A269591, A269592 (sqrt(-4)); %Y A324026 A210850, A210851 (sqrt(-1)); %Y A324026 A324025, this sequence (sqrt(6)). %K A324026 nonn,base %O A324026 0,1 %A A324026 _Jianing Song_, Sep 07 2019