A022503 - OEIS

%I #9 Jan 05 2018 22:02:07

%S 7,71,7111,7113,711231,7112213111,711222113113,71122312311231,

%T 7112223111213112213111,71122331132111311222113113,

%U 711222321231211331122312311231

%N Describe the previous term! (method B - initial term is 7).

%C Method B = 'digit'-indication followed by 'frequency'.

%H Seiichi Manyama, <a href="/A022503/b022503.txt">Table of n, a(n) for n = 1..23</a>

%e E.g. the term after 7113 is obtained by saying "7 once, 1 twice, 3 once", which gives 711231.

%Y Cf. A007651, A022470, A022499, A022500-A022505.

%K nonn,base,easy,nice

%O 1,1

%A _N. J. A. Sloane_