A051387 Numbers whose 4th power is the sum of two positive cubes in a nontrivial way.

134, 182, 183, 201, 219, 273, 278, 309, 399, 422, 453, 497, 579, 651, 658, 1036, 1132, 1324, 1464, 1482, 1554, 1608, 1612, 1752, 1842, 1996, 2058, 2184, 2457, 2472, 2476, 2483, 2574, 2634, 2994, 3052, 3192, 3465, 3474, 3618, 3624, 3724, 3858, 3906, 3976

Offset

1,1

Comments

When x is the sum of 2 positive cubes (A003325) there is a trivial solution.

From Chai Wah Wu, Feb 23 2017: (Start)

2457, 4914, 4977, 8001, 8216, ... are terms that are also in A003325.

10202696, 29791125, 48137544, ... are terms that are also in A001235. (End)

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10000

Example

273^4 = 728^3 + 1729^3.

Crossrefs

Cf. A001235, A003325, A051386.

Sequence in context: A047824 A020353 A050963 * A177348 A275997 A370162

Adjacent sequences: A051384 A051385 A051386 * A051388 A051389 A051390

Keyword

nonn

Author

Jud McCranie

Status

approved