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A088258 Factorials F which have at least one prime neighbor, i.e. F+1 or F-1 or both are primes. 2
1, 2, 6, 24, 720, 5040, 39916800, 479001600, 87178291200, 10888869450418352160768000000, 265252859812191058636308480000000, 263130836933693530167218012160000000 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Conjecture: sequence is infinite. But there are finitely many members which are sandwiched between twin primes.

CROSSREFS

Cf. A088256, A088257.

Sequence in context: A191460 A073475 A061774 * A089718 A123150 A086591

Adjacent sequences:  A088255 A088256 A088257 * A088259 A088260 A088261

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 27 2003

EXTENSIONS

More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 28 2003

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Last modified February 13 23:23 EST 2012. Contains 205567 sequences.