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 A025677 #9 Jul 22 2025 19:03:28
%S A025677 0,1,0,2,1,0,3,2,1,0,4,3,2,1,0,5,4,3,2,1,0,6,5,4,3,2,1,0,7,6,5,4,3,2,
%T A025677 1,0,8,7,6,5,4,3,2,1,0,9,8,7,6,5,4,3,2,1,0,10,9,8,7,6,5,4,3,2,1,11,0,
%U A025677 10,9,8,7,6,5,4,3,2,12,1,11,0,10,9,8,7,6,5,4,3,13,2,12,1,11,0,10,9,8,7,6,5,4,14
%N A025677 Exponent of 8 (value of i) in n-th number of form 8^i*10^j.
%t A025677 Take[Sort[Flatten[Table[{8^i 10^j,i},{i,0,20},{j,0,20}],1]][[;;,2]],110] (* _Harvey P. Dale_, Jul 22 2025 *)
%Y A025677 Cf. A025634.
%K A025677 nonn
%O A025677 1,4
%A A025677 _David W. Wilson_