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A352712
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a(n) is the smallest prime in a sequence of 2n consecutive primes that form a symmetrical constellation of cousin primes.
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0
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OFFSET
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1,1
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COMMENTS
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A cousin prime pair is a pair of primes that differ by 4.
a(8) was found by the T. Brada Experimental Grid BOINC project.
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LINKS
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EXAMPLE
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a(2) = 7 since the 4 consecutive primes (7, 11, 13, 17) are two pairs of cousin primes which are symmetrical because 7 + 17 = 11 + 13.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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