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 A316483 #15 Feb 28 2024 10:48:04 %S A316483 144,225,324,441,900,108900,114921,119025,125316,129600,136161,140625, %T A316483 145161,159201,161604,164025,176400,184041,205209,210681,213444, %U A316483 216225,219024,221841,239121,242064,245025,248004,254016,291600,304704,308025,311364,314721 %N A316483 Squares whose arithmetic mean of digits is 3 (i.e., the sum of digits is 3 times the number of digits). %C A316483 Each term's number of digits is divisible by 3. (See A316480.) %H A316483 Jon E. Schoenfield, <a href="/A316483/b316483.txt">Table of n, a(n) for n = 1..10000</a> %e A316483 12^2 = 144, a 3-digit number whose digit sum is 1+4+4 = 9 = 3*3, so 144 is a term. %e A316483 360^2 = 129600, a 6-digit number whose digit sum is 1+2+9+6+0+0 = 18 = 3*6, so 129600 is a term. %Y A316483 Cf. A069711, A316480. %Y A316483 Intersection of A000290 and A061386. - _Michel Marcus_, Jul 06 2018 %K A316483 nonn,base %O A316483 1,1 %A A316483 _Jon E. Schoenfield_, Jul 04 2018