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A127179
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Primes with prime "Look And Say" descriptions from right to left (irrespective of method A or method B).
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3
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3, 7, 71, 103, 311, 349, 757, 1297, 1327, 1811, 1993, 1999, 3119, 3709, 7027, 7297, 7573, 7603, 7639, 7873, 7883, 7963, 9001, 9043, 9311, 9613, 9677, 10739, 11159, 11177, 13121, 13553, 13721, 13751, 14369, 14831, 14897, 14939, 14951, 15329
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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71 and 311, for instance, belongs to the sequence because their respective descriptions 1117 (one 1, one 7) or 1171 (1 once, 7 once) and 2113 (two 1's, one 3) or 1231 (1 twice, 3 once) are all primes.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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