A067785 Numbers k such that prime(k)^3 == prime(k+1)^3 (mod k).

1, 2, 4, 7, 9, 18, 26, 79, 139, 219, 248, 657, 1505, 11246, 19999, 62608, 368172, 553598, 646926, 1241426, 1562457, 1568558, 5098990, 7889727, 12866334, 18941415, 24647857, 25355582, 25869571, 26114278, 40784906, 46699276, 53532458, 113309714, 230702738, 290702470

Offset

1,2

Comments

a(17) > 10^5. - Michel Marcus, Nov 22 2013

Links

Table of n, a(n) for n=1..36.

Prog

(PARI) isok(n) = Mod(prime(n+1), n)^3 == Mod(prime(n), n)^3; \\ Michel Marcus, Nov 22 2013

Crossrefs

Cf. A030078.

Sequence in context: A153776 A005625 A340989 * A059186 A034702 A325745

Adjacent sequences: A067782 A067783 A067784 * A067786 A067787 A067788

Keyword

nonn

Author

Benoit Cloitre, Feb 06 2002

Extensions

a(16) from Michel Marcus, Nov 22 2013

More terms from Jinyuan Wang, Apr 06 2020

Status

approved