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A128269 a(1)=1. a(n) = LCM((number of earlier terms which are coprime to n),(sum of the earlier terms which are coprime to n)). +0
2
1, 1, 2, 2, 12, 2, 60, 2, 30, 2, 570, 2, 4116, 2, 144, 2, 39600, 2, 747694, 2, 9720308, 2, 115638138, 2, 1261104380, 2, 3814717230, 2, 137331022698, 2, 2137994925180, 2, 8901006912, 2, 274682981784, 2, 46154014360092, 2, 29022598622, 2 (list; graph; listen)
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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