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 A069031 #18 Aug 04 2025 02:26:38
%S A069031 1,6,36,1296,7776,279936,362797056,78364164096,470184984576,
%T A069031 16926659444736,21936950640377856,4738381338321616896,
%U A069031 170581728179578208256,36845653286788892983296,2227915756473955677973140996096,13367494538843734067838845976576
%N A069031 Powers of 6 with strictly increasing sum of digits.
%H A069031 Harvey P. Dale, <a href="/A069031/b069031.txt">Table of n, a(n) for n = 1..51</a>
%t A069031 DeleteDuplicates[Table[{6^n,Total[IntegerDigits[6^n]]},{n,0,40}],GreaterEqual[ #1[[2]],#2[[2]]]&][[All,1]] (* _Harvey P. Dale_, Jan 12 2023 *)
%Y A069031 Cf. A069027, A069028, A069029, A069030.
%Y A069031 Subsequence of A000400.
%K A069031 nonn,base
%O A069031 1,2
%A A069031 _Amarnath Murthy_, Apr 02 2002
%E A069031 More terms from Larry Reeves (larryr(AT)acm.org), Jun 26 2002
%E A069031 More terms from _Sean A. Irvine_, Mar 29 2024