Look and Say sequence: describe the previous term! (method A - initial term is 1).
1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, 31131211131221
4 seqfan posts
Tue Dec 6 04:12:00 CET 2011 [seqfan] Re: Use of Easy keyword
Tue Dec 6 04:03:29 CET 2011 [seqfan] Re: Use of Easy keyword
Thu Jun 30 06:46:54 CEST 2011 [seqfan] Re: Another problem sequence that needs your help.
Thu Jun 30 04:55:49 CEST 2011 [seqfan] Another problem sequence that needs your help.
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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