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 A378927 #20 Dec 26 2024 20:14:19 %S A378927 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26, %T A378927 27,28,29,30,31,33,36,37,43,44,47,53,54,57,63,64,67,70,73,77,83,86,87, %U A378927 89,93,95,96,97,98,99,114,173,187,223,243,263,264,303,307,313,314,315,316,437,447,547,707,964,997,1414,2236,2827,3033,3114,3148,3161 %N A378927 Positive numbers whose squares have at most three digits less than 9. %C A378927 No terms > 3161 with less than 16 digits. %C A378927 No terms > 3161 with less than 101 digits. - _Michael S. Branicky_, Dec 11 2024 %e A378927 3161 is a term because 3161^2 = 9991921 has only three digits that are less than 9. %t A378927 Select[Range[10^6], Count[IntegerDigits[#^2], _?(#1 < 9 &)] < 4 &] %Y A378927 Cf. A053934, A360822, A378925, A378926. %K A378927 nonn,base %O A378927 1,2 %A A378927 _Zhining Yang_, Dec 11 2024