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 A033902 #10 Feb 03 2025 05:40:02 %S A033902 25,50,55,110,121,233,466,932,1171,2288,4576,9143,10492,11741,22888, %T A033902 45776,91453,104912,116161,227327,449704,494183,628672,855350,890908, %U A033902 899807,978706,1046495,1191064,1302533,1425868,2671556,3927223,6150602 %N A033902 Sort then Add, a(1)=25. %p A033902 A033902 := proc(n) %p A033902 option remember ; %p A033902 if n =1 then %p A033902 25; %p A033902 else %p A033902 A070196(procname(n-1)) ; %p A033902 end if; %p A033902 end proc: %p A033902 seq(A033902(n),n=1..100) ; # _R. J. Mathar_, Feb 03 2025 %Y A033902 Cf. A033860. %K A033902 nonn,base,easy %O A033902 1,1 %A A033902 _N. J. A. Sloane_, _David W. Wilson_