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 A069032 #6 Mar 29 2024 19:01:49 %S A069032 1,7,49,16807,117649,5764801,282475249,1977326743,96889010407, %T A069032 678223072849,4747561509943,1628413597910449,11398895185373143, %U A069032 558545864083284007,3909821048582988049,9387480337647754305649,459986536544739960976801 %N A069032 Powers of 7 with strictly increasing sum of digits. %Y A069032 Cf. A069027, A069028, A069029, A069030, A069031. %K A069032 nonn,base %O A069032 1,2 %A A069032 _Amarnath Murthy_, Apr 02 2002 %E A069032 More terms from Larry Reeves (larryr(AT)acm.org), Jun 26 2002 %E A069032 More terms from _Harvey P. Dale_, Jan 22 2016