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A105645
Numbers n such that the n-th prime - n is a cube.
1
1, 2, 38, 152, 542, 746, 1632, 2243, 5317, 7520, 15006, 33156, 39925, 101946, 130340, 136572, 331757, 397252, 560017, 722898, 1037524, 1197551, 1737710, 1754109, 2160356, 2217439, 2559702, 2820804, 5173565, 6197364, 7014969, 7597461
OFFSET
1,2
COMMENTS
Corresponding cubes are: {1,1,5,9,15,17,23,26,36,41,53,71,76}^3. Cf. A064370: numbers n such that the n-th prime - n is a square.
MATHEMATICA
Transpose[Select[Table[{Prime[n], n}, {n, 76*10^5}], IntegerQ[Surd[#[[1]]- #[[2]], 3]]&]][[2]] (* Harvey P. Dale, Jun 22 2016 *)
PROG
(PARI) isok(n) = ispower(prime(n)-n, 3); \\ Michel Marcus, Oct 05 2013
CROSSREFS
Cf. A064370.
Sequence in context: A050248 A337773 A364714 * A098456 A214909 A226402
KEYWORD
nonn
AUTHOR
Zak Seidov, May 03 2005
EXTENSIONS
a(14)-a(32) from Donovan Johnson, Dec 02 2009
STATUS
approved