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A095095
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Number of A080115-primes in range [2^n,2^(n+1)].
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2
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0, 0, 0, 3, 4, 9, 16, 33, 59, 107, 204, 376, 719, 1335, 2521, 4804, 9089, 17311, 33100, 63352, 121283
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OFFSET
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1,4
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LINKS
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FORMULA
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PROG
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(PARI) is(p) = {my(s=0); if(isprime(p), for(i=1, (p-1)/2, if((s+=kronecker(i, p))<0, return(1)))); 0; }
a(n) = sum(p=2^n+1, 2^(n+1), is(p)); \\ Jinyuan Wang, Jul 20 2020
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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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