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Search: id:A001619
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A001619 Number of letters in English name for n increases at these numbers. +0
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1, 3, 11, 13, 17, 21, 23, 73, 101, 103, 111, 113, 117, 121, 123, 173, 323, 373, 1101, 1103, 1111, 1113, 1117, 1121, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13373, 17373, 21373, 23373, 73373, 101373, 103373, 111373, 113373, 117373, 121373 (list; graph; listen)
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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