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A154887 Number of ways to partition n into distinct reduced fractions i/j with j<=n. 3
1, 2, 11, 71, 838, 7915, 181443 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
a(3) = #{3, 8/3+1/3, 5/2+1/2, 7/3+2/3, 2+1, 2+2/3+1/3, 5/3+4/3, 5/3+1+1/3, 3/2+1+1/2, 3/2+2/3+1/2+1/3, 4/3+1+2/3} = 11. - corrected by Reinhard Zumkeller, Feb 02 2009
CROSSREFS
Sequence in context: A214692 A186633 A291301 * A371518 A363389 A323842
KEYWORD
more,nonn
AUTHOR
Reinhard Zumkeller, Jan 17 2009
STATUS
approved

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)