A174359 Numbers n such that 6n-1, 6n+1, and 6n+5 are prime.

1, 2, 3, 7, 17, 18, 32, 38, 52, 58, 77, 107, 137, 143, 147, 182, 213, 217, 238, 247, 248, 268, 312, 333, 347, 373, 378, 443, 448, 542, 577, 588, 612, 653, 667, 688, 753, 773, 798, 822, 828, 872, 913, 917, 942, 1033, 1138, 1313, 1348, 1372, 1382, 1423, 1477

Offset

1,2

Links

Table of n, a(n) for n=1..53.

Example

a(1)=1 because 6*1-1=5, 6*1+1=7, and 6*1+5=11 are all prime.

Crossrefs

Sequence in context: A153787 A141795 A077322 * A160513 A154431 A350118

Adjacent sequences: A174356 A174357 A174358 * A174360 A174361 A174362

Keyword

nonn,easy

Author

Juri-Stepan Gerasimov, Mar 17 2010

Extensions

Corrected by Charles R Greathouse IV, Mar 18 2010

Status

approved