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 A083852 #11 Jul 07 2025 10:44:15 %S A083852 0,11,22,33,44,55,66,77,88,99,121,242,363,484,616,737,858,979,1001, %T A083852 1111,1221,1331,1441,1551,1661,1771,1881,1991,2002,2112,2222,2332, %U A083852 2442,2552,2662,2772,2882,2992,3003,3113,3223,3333,3443,3553,3663,3773,3883,3993,4004 %N A083852 Decimal palindromes that are multiples of 11. %C A083852 A083850(a(n))>0; palindromes with even length are terms. %H A083852 Jeppe Stig Nielsen, <a href="/A083852/b083852.txt">Table of n, a(n) for n = 1..1908</a> %t A083852 Select[Range[0, 5500, 11], PalindromeQ] (* _Paolo Xausa_, Jul 07 2025 *) %o A083852 (PARI) forstep(k=0, 10^5, 11, d=digits(k); d==Vecrev(d) && print1(k, ", ")) \\ _Jeppe Stig Nielsen_, May 08 2020 %Y A083852 Intersection of A002113 and A008593. %Y A083852 Cf. A029951, A045638, A045639, A043040, A043041, A045642, A045643, A045644, A083851. %K A083852 nonn,base %O A083852 1,2 %A A083852 _Reinhard Zumkeller_, May 06 2003