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Search: id:A088258
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| A088258 |
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Factorials F which have at least one prime neighbor, i.e. F+1 or F-1 or both are primes. |
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+0
3
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| 1, 2, 6, 24, 720, 5040, 39916800, 479001600, 87178291200, 10888869450418352160768000000, 265252859812191058636308480000000, 263130836933693530167218012160000000
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OFFSET
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0,2
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COMMENT
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Conjecture: sequence is infinite. But there are finitely many members which are sandwiched between twin primes.
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CROSSREFS
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Cf. A088256, A088257.
Adjacent sequences: A088255 A088256 A088257 this_sequence A088259 A088260 A088261
Sequence in context: A114778 A073475 A061774 this_sequence A089718 A123150 A086591
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 27 2003
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EXTENSIONS
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More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 28 2003
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