A051387 - OEIS

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

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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.