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 A061749 #5 Jul 08 2016 09:51:54
%S A061749 1,10,109,10918,109181017,1091810171091016,
%T A061749 1091810171091016109181091015,
%U A061749 1091810171091016109181091015109181017109181091014
%N A061749 a(0) = 1; a(n) is obtained by incrementing each digit of a(n-1) by 9.
%C A061749 In A061511-A061522, A061746-A061750 when the incremented digit exceeds 9 it is written as a 2-digit string. So 9+1 becomes the 2-digit string 10, etc.
%C A061749 Considering each term as a sequence of digits, this sequence converges to the same limit as A061750, 109181017109101610918109..., fixed point of the operation. - _M. F. Hasler_, Jun 24 2016
%o A061749 (PARI) A061749(n=1, a=1, m=9)={for(n=1, n, a=eval(concat(apply(t->Str(t+m), digits(a))))); a} \\ If only the 2nd argument is given, then the operation is applied once to that argument. - _M. F. Hasler_, Jun 24 2016
%Y A061749 Cf. A061746 - A061750, A061511 - A061522; A061581 - A061587.
%K A061749 base,nonn
%O A061749 0,2
%A A061749 _Amarnath Murthy_, May 08 2001
%E A061749 More terms from Larry Reeves (larryr(AT)acm.org), May 11 2001