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 A262079 #15 Feb 16 2025 08:33:27 %S A262079 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, %T A262079 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,61,61,61,61,61, %U A262079 61,61,61,61,61,61,61,61,61,61,61,61,61,61,61 %N A262079 Differences between successive numbers that can be written as palindromes in base 60, cf. A262065. %C A262079 First differences of A262065. %C A262079 From _Georg Fischer_, Feb 15 2019: (Start) %C A262079 Up to n = 10000, only 12 different values occur. The following table shows the counts and those values. %C A262079 59 -12740399 %C A262079 61 1 %C A262079 45 12747601 %C A262079 1 12956461 %C A262079 2 2 %C A262079 3479 216001 %C A262079 1 3599 %C A262079 2753 3600 %C A262079 1 59 %C A262079 3480 60 %C A262079 117 61 %C A262079 1 7202 %C A262079 (End) %H A262079 Reinhard Zumkeller, <a href="/A262079/b262079.txt">Table of n, a(n) for n = 1..10000</a> %H A262079 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PalindromicNumber.html">Palindromic Number</a> %H A262079 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Sexagesimal.html">Sexagesimal</a> %H A262079 Wikipedia, <a href="http://www.wikipedia.org/wiki/Palindromic_number">Palindromic number</a> %H A262079 Wikipedia, <a href="http://www.wikipedia.org/wiki/Sexagesimal">Sexagesimal</a> %H A262079 <a href="/index/Pac#palindromes">Index entries for sequences related to palindromes</a> %e A262079 a(n) = 1 for n = 1..59, as the first 60 sexagesimal palindromes are 0..59; %e A262079 a(60) = (1*60^1 + 1*60^0) - 59*(60^0) = 61 - 59 = 2; %e A262079 a(61) = (2*60^1 + 2*60^0) - (1*60^1+1*60^0) = 122 - 61 = 61. %o A262079 (Haskell) %o A262079 a262079 n = a262079_list !! (n-1) %o A262079 a262079_list = zipWith (-) (tail a262065_list) a262065_list %Y A262079 Cf. A262065, A086862. %K A262079 sign,base %O A262079 1,60 %A A262079 _Reinhard Zumkeller_, Sep 10 2015