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A047698 Can be written in 2 ways as sum of 4 positive 7th powers. +0
1
2056364173794800, 12191487610289536, 263214614245734400, 696885239160606459, 1560510414117060608 (list; graph; listen)
OFFSET

1,1

REFERENCES

Randy Ekl, New results in equal sums of like powers, Math. Comp. 67 (1998) 1309-1315.

LINKS

D. J. Bernstein, Enumerating solutions to p(a) + q(b) = r(c) + s(d)

CROSSREFS

Sequence in context: A134692 A098099 A067495 this_sequence A058445 A132910 A080126

Adjacent sequences: A047695 A047696 A047697 this_sequence A047699 A047700 A047701

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

Corrected by D. J. Bernstein (djb(AT)cr.yp.to)

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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