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A108061 Numbers n such that 193*n + 191 is prime. 0
0, 2, 20, 26, 30, 32, 42, 54, 62, 72, 96, 114, 126, 132, 134, 140, 144, 152, 174, 176, 182, 194, 200, 204, 216, 222, 240, 270, 282, 302, 314, 324, 350, 356, 372, 404, 422, 446, 450, 452, 470, 474, 480, 504, 506, 510, 522, 524, 530, 552, 560, 572, 594, 620, 624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

191 and 193 are twin primes.

LINKS

Table of n, a(n) for n=1..55.

Chris Caldwell, The First 1,008 Twin Primes.

EXAMPLE

If n=72, then 193*n + 191 = 14087 (prime).

MAPLE

a:=proc(n) if isprime(193*n+191)=true then n else fi end: seq(a(n), n=0..700); # Emeric Deutsch, Jun 10 2005

MATHEMATICA

Select[Range[0, 700], PrimeQ[193#+191]&] (* Harvey P. Dale, Jan 20 2014 *)

PROG

(PARI) is(n)=isprime(193*n+191) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A144673 A144672 A145681 * A154546 A108342 A136903

Adjacent sequences:  A108058 A108059 A108060 * A108062 A108063 A108064

KEYWORD

nonn,easy

AUTHOR

Parthasarathy Nambi, Jun 02 2005

EXTENSIONS

More terms from Emeric Deutsch, Jun 10 2005

STATUS

approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)