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 A065740 #16 Dec 13 2024 12:38:24
%S A065740 1,4,25,256,3025,46656,822649,16777216,387420489,10000000000,
%T A065740 285310881025,8916100448256,302875094536249,11112006825558016,
%U A065740 437893889165373169,18446744073709551616,827240261832761854009,39346408075296537575424,1978419655659032909463364,104857600000000000000000000
%N A065740 Largest square <= n^n.
%H A065740 Harry J. Smith, <a href="/A065740/b065740.txt">Table of n, a(n) for n = 1..100</a>
%F A065740 a(n) = A048760(A000312(n)).
%o A065740 (PARI) a(n) = { sqrtint(n^n)^2 } \\ _Harry J. Smith_, Oct 29 2009
%Y A065740 Cf. A048760, A000312, A065730-A065741.
%K A065740 easy,nonn
%O A065740 1,2
%A A065740 _Labos Elemer_, Nov 15 2001