A274334 Numbers whose cube is the sum of 4 positive cubes.

7, 12, 13, 14, 18, 20, 21, 23, 24, 25, 26, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93

Offset: 1

Author

Altug Alkan, Jun 23 2016

Keywords

• nonn
• easy

Comments

Conjecture: a(n) = n + 21 for all n > 50. - Charles R Greathouse IV, Jan 14 2017

Examples

			7 is a term because 7^3 = 1^3 + 1^3 + 5^3 + 6^3.
		

Links

• Index to sequences related to diophantine equations (3,1,4)

Crossrefs

Cf. A003327.

Extensions

Name edited by Michel Marcus, Jul 30 2025