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A083724
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Numbers k such that 11*7^k + 2 is prime.
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0
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0, 1, 2, 5, 8, 9, 42, 44, 46, 66, 69, 73, 88, 234, 257, 344, 1280, 1930, 2601, 2826, 3506, 6313, 22858, 25478, 32586, 61701, 65406
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OFFSET
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1,3
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COMMENTS
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Some of the larger entries may only correspond to probable primes.
No more terms <= 10^5. - Tyler NeSmith
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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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Primes 13, 79, 541, 184879 are 11*7^0+2, 11*7^1+2, 11*7^2+2, 11*7^5+2.
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PROG
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(PARI) for(n=0, 6000, if(isprime(11*7^n+2), print1(n, ", ")))
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CROSSREFS
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Sequence in context: A243182 A088620 A068702 * A072476 A167541 A078345
Adjacent sequences: A083721 A083722 A083723 * A083725 A083726 A083727
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KEYWORD
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nonn
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AUTHOR
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Rick L. Shepherd, May 08 2003
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EXTENSIONS
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a(22)-a(27) from Tyler NeSmith, Jan 19 2021
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STATUS
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approved
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