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 A375212 #9 Oct 16 2024 21:22:44 %S A375212 1,8,1,2,5,8,10,16,1,2,5,2,3,6,5,6,9,8,10,16,10,12,18,16,18,24,1,2,5, %T A375212 2,3,6,5,6,9,2,3,6,3,4,7,6,7,10,5,6,9,6,7,10,9,10,13,8,10,16,10,12,18, %U A375212 16,18,24,10,12,18,12,14,20,18,20,26,16,18,24,18,20 %N A375212 a(n) is the product of the leading base-3 digit of n and the sum of the squares of its base-3 digits. %H A375212 Nathan Fox, <a href="/A375212/b375212.txt">Table of n, a(n) for n = 1..100000</a> %H A375212 N. Bradley Fox et al., <a href="https://arxiv.org/abs/2409.09863">Elated Numbers</a>, arXiv:2409.09863 [math.NT], 2024. %Y A375212 Cf. A006287, A376270 %K A375212 nonn,base %O A375212 1,2 %A A375212 N. Bradley Fox, _Nathan Fox_, Helen Grundman, Rachel Lynn, Changningphaabi Namoijam, Mary Vanderschoot, Oct 16 2024