login
A022759
n-th 6k+1 prime plus n-th 6k+5 prime.
2
12, 24, 36, 54, 66, 84, 108, 120, 132, 150, 180, 192, 210, 234, 252, 282, 294, 312, 348, 366, 378, 402, 420, 456, 474, 510, 528, 540, 570, 582, 612, 630, 660, 684, 720, 732, 756, 792, 810, 834, 858, 888, 906, 936, 960, 990, 1020, 1038, 1074
OFFSET
1,1
LINKS
FORMULA
a(n) = A002476(n) + A007528(n). - Sean A. Irvine, May 20 2019
MATHEMATICA
Module[{nn=60, pr1, pr5, len}, pr1=Select[Prime[Range[2nn]], Mod[#, 6]==1&]; pr5= Select[ Prime[Range[2nn]], Mod[#, 6]==5&]; len=Min[Length[pr1], Length[ pr5]]; Total/@Thread[{Take[pr1, len], Take[pr5, len]}]] (* Harvey P. Dale, Aug 11 2017 *)
CROSSREFS
Sequence in context: A371413 A019550 A117304 * A335540 A091193 A335541
KEYWORD
nonn
STATUS
approved