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 A122063 #5 Oct 26 2024 10:48:32
%S A122063 17,8,16,23,28,38,49,62,70,77,91,101,103,107,115,122,127,137,148,161,
%T A122063 169,185,199,218,229,242,250,257,271,281,292,305,313,320,325,335,346,
%U A122063 359,376,392,406,416,427,440,448,464,478,497,517,530,538,554,568,587
%N A122063 a(1) = 17, a(n) = sum of digits of all previous terms.
%C A122063 From a quiz.
%D A122063 A. Wareham, Test Your Brain Power, Ward Lock Ltd (1995).
%t A122063 s={17};Do[AppendTo[s,Total[Total/@IntegerDigits/@s]],{n,53}];s (* _James C. McMahon_, Oct 25 2024 *)
%Y A122063 Cf. A004207.
%K A122063 nonn,base
%O A122063 1,1
%A A122063 Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006