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 A105429 #23 Sep 25 2021 02:12:00 %S A105429 8,77,98,1439,179848,2723643,3522548,6428805,805039212,37574751287, %T A105429 536098097002,927422715988 %N A105429 Numbers k such that square root of k contains the reverse of k as a string of digits to the immediate right of the decimal point (excluding leading zeros). %C A105429 a(11) > 2*10^11. If terms ending in 0 were allowed, then 3970 and 5490 would be terms, since sqrt(3970) = 63.00793... and sqrt(5490) = 74.0945... . - _Giovanni Resta_, Aug 08 2019 %C A105429 a(13) > 10^12. - _Mauro Simonato_, Sep 25 2021 %e A105429 a(5)=179848 because the square root of 179848 (whose reverse is 848971) = 424.08489716... %Y A105429 Cf. A074841. %K A105429 nonn,base,more %O A105429 1,1 %A A105429 _Gil Broussard_, Apr 08 2005 %E A105429 a(9)-a(10) from _Giovanni Resta_, Aug 08 2019 %E A105429 a(11)-a(12) from _Mauro Simonato_, Sep 25 2021