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A139064
Primes of the form (7+k!)/7.
11
5702401, 186810624001, 2988969984001, 2215887149047283712000001, 1476163995198020704238093048217600000001, 19811874077955690819705574245769915192271839538955347505831613562880000000000001
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
For numbers k for which (7+k!)/7 is prime see A139065.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..12
FORMULA
a(n) = A139154(A139065(n)). - Amiram Eldar, Oct 14 2024
MATHEMATICA
a = {}; Do[If[PrimeQ[(n! + 7)/7], AppendTo[a, (n! + 7)/7]], {n, 1, 50}]; a
PROG
(PARI) for(k=7, 1e3, if(ispseudoprime(t=k!/7+1), print1(t", "))) \\ Charles R Greathouse IV, Jul 15 2011
CROSSREFS
Cf. A020458, A082672, A089085, A089130, A117141, A007749, A139056, A139057, A139058, A139059, A139060, A139061, A139062, A139063, A139065, A139066, A139154.
Sequence in context: A246055 A210353 A205045 * A151655 A283445 A234256
Adjacent sequences: A139061 A139062 A139063 * A139065 A139066 A139067
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 07 2008
STATUS
approved

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Last modified December 12 11:39 EST 2024. Contains 378650 sequences.
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