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 A027714 #17 Aug 11 2024 14:41:29
%S A027714 0,1,2,5,19,23,60,71,175,179,184,243,753,2431,6154,23111,30947,73188,
%T A027714 75146,230663,237721,598350,3093852,5492899,17605724,18886025,
%U A027714 30909092,62127180,76675186,177865385,230098566,309230287,549199524,589167859,726714741
%N A027714 Numbers k such that k^2+k+3 is a palindrome.
%H A027714 Giovanni Resta, <a href="/A027714/b027714.txt">Table of n, a(n) for n = 1..50</a>
%H A027714 P. De Geest, <a href="https://www.worldofnumbers.com/quasimor.htm">Palindromic Quasi_Over_Squares of the form n^2+(n+X)</a>
%t A027714 npalQ[n_]:=Module[{c=n^2+n+3},c==IntegerReverse[c]]; Select[Range[ 0,31*10^5],npalQ] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Aug 15 2016 *)
%Y A027714 Cf. A027715, A027688, A027752, A027753, A027712, A027716.
%K A027714 nonn,base
%O A027714 1,3
%A A027714 _Patrick De Geest_
%E A027714 More terms from _Giovanni Resta_, Aug 29 2018