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 A088400 #5 Aug 06 2019 05:40:51 %S A088400 29,19,0,14,13,0,8,7,0,29,19,0,5,4,0,8,7,0,2,19,0,14,4,0,17,7,0,2,1,0, %T A088400 5,4,0,8,7,0,2,1,0,14,4,0,8,7,0,2,1,0,5,13,0,8,7,0,11,1,0,5,4,0,17,7, %U A088400 0,2,1,0,5,4,0,8,16,0,2,1,0,5,4,0,8,7,0,2,1,0,5,4,0,8,7,0,2,1,0,5,4,0,26,25 %N A088400 a(n)=A069530(n)/n. %H A088400 R. J. Mathar, <a href="/A088400/b088400.txt">Table of n, a(n) for n = 1..1110</a> %p A088400 read("transforms"): %p A088400 A088400 := proc(n) %p A088400 local m ; %p A088400 if modp(n,3) = 0 then %p A088400 0 ; %p A088400 else %p A088400 for m from 1 do %p A088400 if digsum(m*n) = 11 then %p A088400 return m ; %p A088400 end if; %p A088400 end do: %p A088400 end if; %p A088400 end proc: # _R. J. Mathar_, Aug 06 2019 %Y A088400 Cf. A069530. %K A088400 nonn,base %O A088400 1,1 %A A088400 _Ray Chandler_, Sep 28 2003