%I #14 Aug 11 2024 14:41:29
%S 5,7,11,77,161,707,5555,16261,50405,53135,7570757,11988911,16100161,
%T 16544561,162626261,502858205,758919857,793464397,11092829011,
%U 11539593511,5560873780655,7424090904247,7702753572077,16515222251561,57293477439275,7246424554246427
%N Palindromes of form k^2 + k + 5.
%H Giovanni Resta, <a href="/A027728/b027728.txt">Table of n, a(n) for n = 1..46</a>
%H P. De Geest, <a href="https://www.worldofnumbers.com/quasimor.htm">Palindromic Quasi_Over_Squares of the form n^2+(n+X)</a>
%t palQ[n_] := Block[{d = IntegerDigits[n]}, d == Reverse[d]]; f[n_] := n^2 + n + 5; Select[f@ Range[0, 10^5], palQ] (* _Giovanni Resta_, Aug 29 2018 *)
%Y Cf. A027718, A027690, A027754, A027755, A027717, A027728, A027721.
%K nonn,base
%O 1,1
%A _Patrick De Geest_
%E More terms from _Giovanni Resta_, Aug 28 2018