A066893 Numbers k such that k divides (prime(3*k) - prime(2*k)).

1, 2, 6, 21, 25, 32, 174, 400, 918, 960, 971, 987, 2374, 5928, 5935, 5942, 5977, 14838, 37259, 37282, 94154, 238309, 1556445, 4004112, 10308825, 10308837, 10309843, 10309906, 26627152, 68912912, 68913663, 68913687, 68914102, 68915077, 68915098, 68916054

Offset

1,2

Links

Giovanni Resta, Table of n, a(n) for n = 1..51

Mathematica

Select[Range[10^6], Mod[Prime[3 #] - Prime[2 #], #] == 0 &]

Prog

(PARI) isok(k) = { (prime(3*k)-prime(2*k)) % k == 0 } \\ Harry J. Smith, Apr 05 2010

Crossrefs

Cf. A000040, A255174.

Sequence in context: A242819 A126099 A063753 * A004192 A104143 A088812

Adjacent sequences: A066890 A066891 A066892 * A066894 A066895 A066896

Keyword

nonn,changed

Author

Benoit Cloitre, Jan 24 2002

Extensions

More terms from Robert G. Wilson v, Jan 26 2002

a(23) from Harry J. Smith, Apr 05 2010

a(24)-a(36) from Giovanni Resta, Jun 18 2018

Status

approved