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Search: id:A076379
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| A076379 |
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n!-x!+1 is never prime for x<n. |
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+0
2
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| 1, 15, 22, 27, 28, 36, 43, 45, 48, 50, 52, 58, 60, 63, 64, 67, 70, 77, 80, 82, 83, 84, 85, 86, 97
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(PARI) for (a=1, 100, c=0; for (b=1, a-1, if (b%2<>a%2, continue); if (isprime(a!-b!+1), c=1; break)); if (c==0, print1(a, ", ")))
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CROSSREFS
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Cf. A076378.
Sequence in context: A115174 A092783 A108638 this_sequence A038753 A006615 A114867
Adjacent sequences: A076376 A076377 A076378 this_sequence A076380 A076381 A076382
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), Oct 08 2002
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