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- Q1129511 subject Q7216578.
- Q1129511 subject Q8234756.
- Q1129511 subject Q9801071.
- Q1129511 abstract "In mathematics, the look-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, ... (sequence A005150 in OEIS).To generate a member of the sequence from the previous member, read off the digits of the previous member, counting the number of digits in groups of the same digit. For example: 1 is read off as "one 1" or 11. 11 is read off as "two 1s" or 21. 21 is read off as "one 2, then one 1" or 1211. 1211 is read off as "one 1, then one 2, then two 1s" or 111221. 111221 is read off as "three 1s, then two 2s, then one 1" or 312211.The look-and-say sequence was introduced and analyzed by John Conway.The idea of the look-and-say sequence is similar to that of run-length encoding.If we start with any digit d from 0 to 9 then d will remain indefinitely as the last digit of the sequence. For d different from 1, the sequence starts as follows: d, 1d, 111d, 311d, 13211d, 111312211d, 31131122211d, …Ilan Vardi has called this sequence, starting with d = 3, the Conway sequence (sequence A006715 in OEIS). (for d = 2, see OEIS A006751)".
- Q1129511 thumbnail Conways_constant.svg?width=300.
- Q1129511 wikiPageExternalLink watch?v=ea7lJkEhytA.
- Q1129511 wikiPageExternalLink a-derivation-of-conways-degree-71-look-and-say-polynomial.
- Q1129511 wikiPageExternalLink lookandsay.
- Q1129511 wikiPageExternalLink looknsay.htm.
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- Q1129511 wikiPageWikiLink Q6427013.
- Q1129511 wikiPageWikiLink Q7216578.
- Q1129511 wikiPageWikiLink Q81365.
- Q1129511 wikiPageWikiLink Q8234756.
- Q1129511 wikiPageWikiLink Q843684.
- Q1129511 wikiPageWikiLink Q917661.
- Q1129511 wikiPageWikiLink Q9801071.
- Q1129511 comment "In mathematics, the look-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, ... (sequence A005150 in OEIS).To generate a member of the sequence from the previous member, read off the digits of the previous member, counting the number of digits in groups of the same digit. For example: 1 is read off as "one 1" or 11. 11 is read off as "two 1s" or 21. 21 is read off as "one 2, then one 1" or 1211.".
- Q1129511 label "Look-and-say sequence".
- Q1129511 depiction Conways_constant.svg.