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A108420
Numbers n such that n!! + prime(n) is prime.
0
3, 14, 20, 54, 56, 144, 206, 212, 436, 1610, 4450, 4512, 5202, 6684
OFFSET
1,1
COMMENTS
There is no further term up to 8800. - Farideh Firoozbakht, Aug 19 2005
MATHEMATICA
Select[Range[1610], PrimeQ[ #!! - Prime[ # ]] &]
CROSSREFS
Sequence in context: A063633 A108933 A271384 * A015639 A019000 A305090
KEYWORD
nonn
AUTHOR
Amineh Farzannia (afarzannia(AT)yahoo.com), Jul 06 2005
EXTENSIONS
More terms from Farideh Firoozbakht, Aug 19 2005
STATUS
approved