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 A147753 Number of maximum-size subsets of {1,2,3,...,n} whose geometric means are an integer. 2
 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 LINKS EXAMPLE For n=4, (1*4)^(1/2)=2 and (1*2*4)^(1/3)=2. No other subset of {1,2,3,4} has integer geometric mean and only one has maximum size 3, so a(4)=1. CROSSREFS Sequence in context: A107039 A249771 A030615 * A116531 A101871 A101875 Adjacent sequences:  A147750 A147751 A147752 * A147754 A147755 A147756 KEYWORD nonn AUTHOR John W. Layman, Nov 11 2008 STATUS approved

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Last modified May 26 16:47 EDT 2019. Contains 323597 sequences. (Running on oeis4.)