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A124520
Numbers k such that 14*k - 1 and 14*k + 1 are twin primes.
4
3, 30, 33, 63, 75, 78, 93, 102, 123, 138, 153, 162, 165, 192, 195, 240, 252, 273, 297, 303, 342, 387, 393, 420, 435, 438, 450, 468, 483, 522, 525, 540, 588, 630, 633, 660, 663, 717, 738, 747, 750, 765, 798, 825, 837, 855, 957, 978, 993, 1023, 1032, 1062
OFFSET
1,1
LINKS
EXAMPLE
3 is in the sequence since 14*3 - 1 = 41 and 14*3 + 1 = 43 are twin primes.
MATHEMATICA
Select[Range[1100], And @@ PrimeQ[{-1, 1} + 14# ] &] (* Ray Chandler, Nov 16 2006 *)
KEYWORD
nonn
AUTHOR
Artur Jasinski, Nov 04 2006
EXTENSIONS
Extended by Ray Chandler, Nov 16 2006
STATUS
approved