

A039664


Numbers k such that k^4 can be written as a sum of four positive 4th powers with no common factor.


7



353, 651, 2487, 2501, 2829, 3723, 3973, 4267, 4333, 4449, 4949, 5281, 5463, 5491, 5543, 5729, 6167, 6609, 6801, 7101, 7209, 7339, 7703, 8373, 8433, 8493, 8517, 8577, 8637, 9137, 9243, 9431, 9519, 9639, 9797, 9877, 10419, 10939, 11681, 11757
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OFFSET

1,1


LINKS

T. D. Noe, Table of n, a(n) for n = 1..1003 (from Wroblewski, with duplicate n removed)
L. J. Lander, T. R. Parkin and J. L. Selfridge, A survey of equal sums of like powers, Math. Comp. vol. 21 no. 99, 1967, pp. 446459, Table 1.
Eric Weisstein's World of Mathematics, Diophantine Equation  4th powers
Jaroslaw Wroblewski, Exhaustive list of 1009 solutions to (4,1,4) below 222,000


CROSSREFS

Cf. A003294 (nonprimitive solutions allowed), A096739.
Sequence in context: A059635 A003294 A096739 * A054825 A304385 A142565
Adjacent sequences: A039661 A039662 A039663 * A039665 A039666 A039667


KEYWORD

nonn


AUTHOR

Felice Russo


EXTENSIONS

Edited by Don Reble, Jul 07 2007
Qualifier "positive" added to the name by Jianing Song, Jan 24 2020


STATUS

approved



