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 A055391 #16 Jul 02 2025 16:01:59 %S A055391 2,1,3,4,7,11,167761 %N A055391 Palindromic Lucas numbers (in the order of appearance). %C A055391 Perhaps 167761 is the last term? %C A055391 No other terms through L(10000) - _James Sellers_, Jul 07 2000 %C A055391 No further terms through L(200000). - _Lior Manor_, Oct 18 2007 %e A055391 11 is the sixth Lucas number and it is also palindromic in base 10. %t A055391 Select[LucasL[Range[0,200]],PalindromeQ] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, May 26 2018 *) %Y A055391 Cf. A000032, A045504. %K A055391 nonn,base %O A055391 1,1 %A A055391 M. Harminc (harminc(AT)duro.science.upjs.sk), Jul 06 2000