%I A022507
%S A022507 3,13,1311,211311,21132112,122112132112,122112131112212211,
%T A022507 2122112231131112212211,21221122311321132221221112,
%U A022507 12312211321321121321132221221112
%N A022507 Describe previous term from the right (method A - initial term is 3).
%C A022507 Method A = 'frequency' followed by 'digit'-indication.
%e A022507 E.g. the term after 1311 is obtained by saying "two 1's, one 3, one 1", 
               which gives 211311.
%Y A022507 Cf. A022506, A006711, A022482, A022508-A022513.
%Y A022507 Sequence in context: A112513 A006715 A138487 this_sequence A108583 A119987 
               A127855
%Y A022507 Adjacent sequences: A022504 A022505 A022506 this_sequence A022508 A022509 
               A022510
%K A022507 nonn,base,easy,nice
%O A022507 0,1
%A A022507 N. J. A. Sloane (njas(AT)research.att.com).
%E A022507 More terms from Erich Friedman (erich.friedman(AT)stetson.edu).