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A347569
Number of ways 1/n can be expressed as the sum of six distinct unit fractions: 1/n = 1/p + 1/q + 1/r + 1/s + 1/t + 1/u, with 0 < p < q < r < s < t < u.
3
2320, 244817, 3421052, 18420699, 64025680, 131223239, 431008820, 681922142
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..8.
CROSSREFS
Cf.
A002966
,
A073546
,
A227610
,
A241883
,
A347566
.
Sequence in context:
A210175
A137733
A205636
*
A250998
A119735
A115933
Adjacent sequences:
A347566
A347567
A347568
*
A347570
A347571
A347572
KEYWORD
nonn
,
hard
,
more
AUTHOR
Jud McCranie
, Sep 06 2021
EXTENSIONS
a(7) and a(8) from
Jud McCranie
, Oct 15 2021
STATUS
approved
