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 A355548 #9 Jul 07 2022 05:03:16 %S A355548 0,2,4,8,16,33,55,404,44,646,99,66,848,909,888,110,88,1090,132,176, %T A355548 1089,363,3443,10010,121,1881,242,1991,4323,3982,1595,726,3553,2992, %U A355548 3663,7447,484,1353,46064,6446,5665,10769,3993,2662,4103,2882,968,1111,1837,7667 %N A355548 a(n) is the smallest number k such that k occurs in the Reverse-and-Add trajectories of exactly n positive integers less than k. %C A355548 a(n) is the smallest k such that A298972(k) = n. %o A355548 (PARI) a298972(n) = my(i=0); for(k=1, n-1, my(x=k); while(x < n, x=x+eval(concat(Vecrev(Str(x))))); if(x==n, i++)); i %o A355548 a(n) = for(k=0, oo, if(a298972(k)==n, return(k))) %Y A355548 Cf. A298972, A355550. %K A355548 nonn,base %O A355548 0,2 %A A355548 _Felix Fröhlich_, Jul 06 2022 %E A355548 More terms from _Jinyuan Wang_, Jul 07 2022