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A092640
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Number of consecutive prime runs of 2 primes congruent to 3 mod 4 below 10^n.
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5
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0, 5, 20, 101, 751, 5949, 49010, 418366, 3627049, 32067600, 287357618
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OFFSET
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1,2
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LINKS
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FORMULA
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Generate the prime sequence with primes labeled 1 mod 4 or 3 mod 4. Add count of primes to sequence if just 2 primes occur before interruption by a prime congruent to 1 mod 4.
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EXAMPLE
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a(4)=101 because 101 pairs of primes occur below 10^4, each run interrupted by a prime congruent to 1 mod 4.
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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