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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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 7 23:50 EDT 2022. Contains 355995 sequences. (Running on oeis4.)