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A302435
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Number of primes of the form b^2+3 for b <= 10^n.
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3
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1) = 5 because there are 5 primes of the form b^2+3 for b <= 10: 3, 7, 19, 67 and 103.
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PROG
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(PARI) {a(n) = sum(k=0, 10^n, isprime(k^2+3))}
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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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