A062652 -id:A062652

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A062654

Numbers k such that 88^k - 87^k is prime or a strong pseudoprime.

+10
0

5, 7, 19, 241, 607, 74047 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`All terms must be prime. - M. F. Hasler, Sep 21 2013` `a(7) > 10^5. - Robert Price, May 28 2015`
	LINKS	`Table of n, a(n) for n=1..6.`
	MATHEMATICA	`Select[Range[0, 1000], PrimeQ[88^# - 87^#] &] (* Robert Price, May 28 2015 *)`
	PROG	`(PARI) is(n)=ispseudoprime(88^n-87^n) \\ Charles R Greathouse IV, Jun 13 2017`
	CROSSREFS	`Cf. A000043, A057468, A059801, A059802, A059803, A062572-A062652, A215536, A062655-A062666.`
	KEYWORD	`nonn,hard`
	AUTHOR	`Mike Oakes, May 18 2001, May 19 2001`
	EXTENSIONS	`Edited by M. F. Hasler, Sep 21 2013` `a(6) from Robert Price, May 28 2015 (computer run by Adam Marciniec)`
	STATUS	`approved`

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Last modified August 29 11:12 EDT 2024. Contains 375512 sequences. (Running on oeis4.)