%I #5 Oct 27 2023 22:05:38
%S 11,21,31,41,51,61,71,81,91,101,111,221,431,741,1151,2661,81271,93981,
%T 12121791,3333816101,66611977111,1212721016148221,333993117751210431,
%U 66121812428141263314741,127339936610955389645111151
%N a(1) = 11, a(n) = number obtained by adding to each digit of a(n-1) the next digit.
%e 2661 -> (2+6) (6+6) (6+1) 1, i.e., 81271.
%Y Cf. A061590.
%K nonn,easy,base
%O 1,1
%A _Amarnath Murthy_, May 13 2001
%E Corrected and extended by Larry Reeves (larryr(AT)acm.org) and _Asher Auel_, May 14 2001