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A156670
Positive integers k such that k^2 = (m^5 - n^5)/(m - n) for some nonnegative coprime integers m, n.
2
1, 11, 1169341, 20188985439712961, 3506790234728288196345900732301, 5190947078637547438603476743093680561, 1041849413143039115171399776907273433339109867252078165841
OFFSET
1,2
EXAMPLE
1169341 belongs to this sequence since 1169341^2 = (808^5 - 627^5) / (808 - 627) with gcd(808, 627) = 1.
CROSSREFS
Sequence in context: A211238 A014127 A049192 * A116061 A013858 A230376
KEYWORD
nonn
AUTHOR
Max Alekseyev, Feb 13 2009
STATUS
approved