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A108108 Numbers n such that both 137*n + 139 and 139*n + 137 are primes. 0
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

Table of n, a(n) for n=1..44.

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: A188250 A008524 A059677 * A123456 A144521 A044122

Adjacent sequences:  A108105 A108106 A108107 * A108109 A108110 A108111

KEYWORD

nonn

AUTHOR

Zak Seidov, Jun 03 2005

STATUS

approved

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Last modified November 19 01:45 EST 2017. Contains 294912 sequences.