|
| |
|
|
A003336
|
|
Numbers that are the sum of 2 nonzero 4-th powers.
|
|
22
| |
|
|
2, 17, 32, 82, 97, 162, 257, 272, 337, 512, 626, 641, 706, 881, 1250, 1297, 1312, 1377, 1552, 1921, 2402, 2417, 2482, 2592, 2657, 3026, 3697, 4097, 4112, 4177, 4352, 4721, 4802, 5392, 6497, 6562, 6577, 6642, 6817, 7186, 7857, 8192, 8962, 10001, 10016
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Numbers n such that n = x^4 + y^4 has a solution in positive integers x, y.
|
|
|
REFERENCES
| A. Bremner and P. Morton, A new characterization of the integer 5906, Manuscripta Math. 44 (1983) 187-229; Math. Rev. 84i:10016.
|
|
|
LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
S. R. Finch, On a Generalized Fermat-Wiles Equation
|
|
|
MATHEMATICA
| nn=12; Select[Union[Plus@@@(Tuples[Range[nn], {2}]^4)], # <= nn^4&] [From Harvey P. Dale, Dec. 29, 2010]
|
|
|
CROSSREFS
| 5906 is the first term in A060387 but not in this sequence. Cf. A020897.
Sequence in context: A162622 A078164 A060387 * A178145 A055261 A100294
Adjacent sequences: A003333 A003334 A003335 * A003337 A003338 A003339
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
