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a(1) = 11; for n >= 1, a(n+1) is obtained by replacing the k-th digit of a(n) with the sum of all the less significant digits starting from the k-th digit.
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%I #5 Mar 31 2017 21:13:47

%S 11,21,31,41,51,61,71,81,91,101,211,421,731,1141,7651,191261,

%T 201910971,3028282718171781,666363615351434134332524171691,

%U 11410810296938784787772696463595652514844413836312925241716101

%N a(1) = 11; for n >= 1, a(n+1) is obtained by replacing the k-th digit of a(n) with the sum of all the less significant digits starting from the k-th digit.

%e After 211 the next term is obtained by replacing 2 with 2+1+1, 1 by 1+1 and retaining the least significant digit and it is 421.

%Y Cf. A110403.

%K base,easy,nonn

%O 1,1

%A _Amarnath Murthy_, Jul 29 2005

%E More terms from Michael J. Sell (mjs589(AT)psu.edu), Mar 19 2006