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A007890 Summarize the previous term! (in decreasing order). 4
1, 11, 21, 1211, 1231, 131221, 132231, 232221, 134211, 14131231, 14231241, 24132231, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221, 14233221 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

For example, the term after 131221 is obtained by saying "one 3, two 2's, three 1's", which gives 13-22-31, i.e. 132231.

CROSSREFS

Cf. A005150.

Sequence in context: A098155 A098154 A158081 * A063850 A005150 A001388

Adjacent sequences:  A007887 A007888 A007889 * A007891 A007892 A007893

KEYWORD

nonn,base,easy

AUTHOR

Mira Bernstein (mira(AT)math.berkeley.edu)

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Last modified February 17 09:41 EST 2012. Contains 206009 sequences.