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 A316485 #17 Feb 28 2024 10:48:08
%S A316485 64,12769,14884,24649,24964,27556,30976,33856,37249,37636,44944,48841,
%T A316485 56644,65536,66049,70756,75076,75625,80089,80656,85264,96721,10778089,
%U A316485 10982596,11464996,11498881,11648569,11957764,11992369,12369289,12559936,12687844,12909649
%N A316485 Squares whose arithmetic mean of digits is 5 (i.e., the sum of digits is 5 times the number of digits).
%C A316485 Each term's number of digits is in A174438 (Numbers that are congruent to {0, 2, 5, 8} mod 9). For every positive term k in A174438, this sequence contains at least one k-digit term. (See A316480.)
%H A316485 Jon E. Schoenfield, <a href="/A316485/b316485.txt">Table of n, a(n) for n = 1..10000</a>
%e A316485 8^2 = 64, a 2-digit number whose digit sum is 6+4 = 10 = 5*2, so 64 is a term.
%e A316485 3283^2 = 10778089, an 8-digit number whose digit sum is 1+0+7+7+8+0+8+9 = 40 = 5*8, so 10778089 is a term.
%t A316485 Select[Range[4000]^2,Mean[IntegerDigits[#]]==5&] (* _Harvey P. Dale_, Sep 10 2022 *)
%Y A316485 Cf. A069711, A174438, A316480.
%Y A316485 Intersection of A000290 and A061388. - _Michel Marcus_, Jul 06 2018
%K A316485 nonn,base
%O A316485 1,1
%A A316485 _Jon E. Schoenfield_, Jul 04 2018