

A212606


Number of distinct sums <= 1 of reciprocals of positive integers <= n.


3



1, 2, 3, 6, 10, 26, 34, 103, 175, 393, 599, 2015, 2551, 8681, 14254, 19620, 34700, 129557, 161272, 595304, 695175, 1094164, 1903859, 7654850
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OFFSET

0,2


LINKS

Table of n, a(n) for n=0..23.


EXAMPLE

a(3) = 6 counts numbers { 0, 1/3, 1/2, 2/3, 5/6, 1 }, each of which is can be represented as the sum of reciprocals 1/1, 1/2, and 1/3.


CROSSREFS

For distinct sums of distinct reciprocals, see A212607.
Cf. A020473, A092669, A092671, A208480
Sequence in context: A123256 A111275 A272079 * A192440 A274964 A054357
Adjacent sequences: A212603 A212604 A212605 * A212607 A212608 A212609


KEYWORD

nonn,more


AUTHOR

Max Alekseyev, May 22 2012


STATUS

approved



