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 A115534 #8 Jul 15 2021 21:22:36 %S A115534 85714286,128571429,171428572,69230769231,92307692308,115384615385, %T A115534 138461538462,161538461539, %U A115534 85714285714285714285714285714285714285714285714286 %N A115534 Numbers k such that k^2 is the concatenation of two numbers 3*m and m. %e A115534 85714286^2 = 73469388_24489796. %Y A115534 Cf. A102567, A106497, A115527 - A115556. %K A115534 nonn,base %O A115534 1,1 %A A115534 _Giovanni Resta_, Jan 25 2006 %E A115534 Definition modified by _Georg Fischer_, Jul 26 2019