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A003139 Coprime chains with largest member n.
(Formerly M0129)
+0
2
1, 1, 1, 1, 2, 1, 3, 1, 3, 2, 9, 1, 10, 2, 4, 3, 19, 1, 20, 2, 6, 4, 32, 1, 21, 7, 16, 7, 84, 1, 85, 9, 18, 11, 35, 3, 161, 15, 30, 6, 212, 2, 214, 15, 12, 19, 260, 3, 154, 11, 62, 31, 521, 5, 129 (list; graph; listen)
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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