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A174271 Primes p such that 19^p-18 is also prime. 0
3, 5, 7, 197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

For p=3, 19^3-18=6841; p=5, 19^5-18=2476081; p=7, 19^7-18=893871721

PROG

(MAGMA) [ p: p in PrimesUpTo(2000)| IsPrime(19^p-18)]

CROSSREFS

Sequence in context: A259385 A114366 A088092 * A211678 A082756 A268693

Adjacent sequences:  A174268 A174269 A174270 * A174272 A174273 A174274

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Mar 14 2010

STATUS

approved

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Last modified August 9 20:09 EDT 2020. Contains 336326 sequences. (Running on oeis4.)