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 A052097 #13 Aug 11 2024 14:41:32 %S A052097 31646191,33228821,33333003,34468078,34528437,34597630,35229568, %T A052097 36920414,37605474,39693346,41508061,43076539,43109691,43485609, %U A052097 43529521,44147309,44294056,45455649,45460011,45460110,45961010 %N A052097 a(n)^2 is a square whose decimal expansion digits occur with an exact frequency of 4. %C A052097 Last term is 99999444387327303945. - _Giovanni Resta_, Mar 21 2013 %H A052097 P. De Geest, <a href="https://www.worldofnumbers.com/samedigits.htm">Numbers whose digits occur with same frequency</a> %e A052097 33228821 is in the sequence because 33228821^2 = 1104154545050041, in which each digit is repeated 4 times. %Y A052097 Cf. A052098, A052095, A052096, A052049. %K A052097 nonn,base,fini %O A052097 1,1 %A A052097 _Patrick De Geest_, Jan 15 2000