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A076682
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Numbers k such that 6*k! + 1 is prime.
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7
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0, 1, 2, 3, 7, 8, 9, 12, 13, 18, 24, 38, 48, 60, 113, 196, 210, 391, 681, 739, 778, 1653, 1778, 1796, 1820, 2505, 4595
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OFFSET
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1,3
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COMMENTS
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a(28) > 5800. - Jinyuan Wang, Feb 05 2020
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LINKS
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Table of n, a(n) for n=1..27.
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EXAMPLE
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k = 3 is here because 6*3! + 1 = 37 is prime.
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PROG
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(PARI) is(k) = ispseudoprime(6*k!+1); \\ Jinyuan Wang, Feb 05 2020
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CROSSREFS
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Cf. A002981, A051915, A076679, A076680, A076681, A076683, A178488, A180626, A126896.
Sequence in context: A268398 A249587 A007607 * A327224 A231624 A194381
Adjacent sequences: A076679 A076680 A076681 * A076683 A076684 A076685
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KEYWORD
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nonn,more
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AUTHOR
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Phillip L. Poplin (plpoplin(AT)bellsouth.net), Oct 25 2002
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STATUS
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approved
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