A108108 - OEIS

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A108108

Numbers k such that both 137*k + 139 and 139*k + 137 are primes.

0, 20, 54, 66, 104, 140, 194, 204, 210, 260, 264, 276, 360, 390, 546, 570, 600, 794, 836, 846, 860, 986, 1086, 1140, 1146, 1160, 1254, 1260, 1284, 1296, 1350, 1436, 1440, 1454, 1506, 1650, 1706, 1736, 1770, 1814, 1826, 1860, 1904, 1970

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Intersection of A108027 and A108028.

LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

MATHEMATICA

s={}; Do[If[PrimeQ[137*n+139]&&PrimeQ[139*n+137], s=Append[s, n]], {n, 2000}]; s

CROSSREFS

Cf. A108027, A108028.

Sequence in context: A302885 A059677 A301372 * A316935 A123456 A144521

Adjacent sequences: A108105 A108106 A108107 * A108109 A108110 A108111

KEYWORD

nonn

AUTHOR

Zak Seidov, Jun 03 2005

STATUS

approved