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 A023703 #13 Sep 13 2023 07:24:51 %S A023703 242,485,566,647,674,701,710,719,722,725,726,727,971,1214,1295,1376, %T A023703 1403,1430,1439,1448,1451,1454,1455,1456,1538,1619,1646,1673,1682, %U A023703 1691,1694,1697,1698,1699,1781,1862,1889,1916 %N A023703 Numbers with exactly 5 2's in their ternary expansion. %H A023703 Seiichi Manyama, <a href="/A023703/b023703.txt">Table of n, a(n) for n = 1..10000</a> %t A023703 Select[ Range[ 2025 ], (Count[ IntegerDigits[ #, 3 ], 2 ]==5)& ] %K A023703 nonn,base,easy %O A023703 1,1 %A A023703 _Olivier Gérard_