A004830 Numbers that are the sum of at most 8 positive cubes.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Comments

All integers except 23 and 239, see Dickson reference. - Joerg Arndt, Jul 29 2012

Links

• T. D. Noe, Table of n, a(n) for n = 1..1000
• Leonard Eugene Dickson, All integers except 23 and 239 are sums of eight cubes, Bulletin of the American Mathematical Society, vol.45, pp.588-591, (1939).
• Index entries for linear recurrences with constant coefficients, signature (2,-1).
• Index entries for sequences related to sums of cubes

Crossrefs

Cf. A004829.

Programs

PARI

a(n)=if(n<24,n-1, n<239,n, n+1) \\ Charles R Greathouse IV, Jun 20 2024

Formula

a(n) = n + 1 for n > 238. - Charles R Greathouse IV, Jun 20 2024