A156669 Positive integers k such that k^2 = (m^5 + n^5)/(m + n) for some nonnegative coprime integers m, n.

1, 101, 13361, 1612186411, 1624763543401, 240020196429554642201, 29891946989942513908518251, 5506336596007252456855684531229391026385301, 92724987584857206382605250844078768507060135044811

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Example

13361 belongs to this sequence since 13361^2 = (35^5 + 123^5) / (35 + 123) with gcd(35, 123) = 1.

Crossrefs

Cf. A156668, A156670.

Sequence in context: A171825 A267937 A185893 * A082435 A136098 A153807

Adjacent sequences: A156666 A156667 A156668 * A156670 A156671 A156672

Keyword

nonn

Author

Max Alekseyev, Feb 13 2009

Status

approved