OFFSET
1,1
COMMENTS
Union of 2 and A002407. Believed to be infinite.
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..10000
Andrew Sutherland, Sums of three cubes, Slides of a talk given May 07 2020 on the Number Theory Web.
Fernando Rodriguez Villegas and Don Zagier, Which primes are sums of two cubes?, CMS Conference Proceedings 15 (1995), pp. 295-306.
EXAMPLE
2 = 1^3 + 1^3.
7 = 2^3 + (-1)^3.
19 = 3^3 + (-2)^3.
MATHEMATICA
Union[{2}, Select[Table[3n^2+3n+1, {n, 93}], PrimeQ]] (* Paul F. Marrero Romero, Oct 21 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 07 2020
STATUS
approved