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 A033904 #9 Feb 03 2025 05:32:18 %S A033904 29,58,116,232,455,910,929,1228,2456,4912,6161,7327,9704,10183,11321, %T A033904 22444,44888,89776,157565,313132,425465,670021,671288,798076,865865, %U A033904 1422553,2646008,2670676,2937353,5270932,5494511,6639070,6675749 %N A033904 Sort then Add, a(1)=29. %p A033904 A033904 := proc(n) %p A033904 option remember ; %p A033904 if n =1 then %p A033904 29; %p A033904 else %p A033904 A070196(procname(n-1)) ; %p A033904 end if; %p A033904 end proc: %p A033904 seq(A033904(n),n=1..100) ; # _R. J. Mathar_, Feb 03 2025 %Y A033904 Cf. A033860. %K A033904 nonn,base,easy %O A033904 1,1 %A A033904 _N. J. A. Sloane_, _David W. Wilson_