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 A109759 #7 Oct 27 2019 11:11:55 %S A109759 66,88,222,282,464,474,606,868,2002,20802,24042,24342,24942,29092, %T A109759 41214,44144,45354,46564,47274,60906,64146,66966,67676,80108,81318, %U A109759 83238,85458,85758,87378,89898,2002002,2008002,2024202,2027202,2032302 %N A109759 Palindromic admirable numbers. %H A109759 Amiram Eldar, <a href="/A109759/b109759.txt">Table of n, a(n) for n = 1..1000</a> %t A109759 palQ[n_] := PalindromeQ @ IntegerDigits[n]; admQ[n_] := (ab = DivisorSigma[1, n] - 2 n) > 0 && EvenQ[ab] && ab/2 < n && Divisible[n, ab/2]; Select[Range[2*10^6], palQ[#] && admQ[#] &] (* _Amiram Eldar_, Oct 27 2019 *) %Y A109759 Intersection of A002113 and A111592. %K A109759 base,easy,nonn %O A109759 1,1 %A A109759 _Jason Earls_, Aug 12 2005