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A221860
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Indices k such that prime(k) - k is a power of 2.
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1
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OFFSET
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1,2
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COMMENTS
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The only primes in this sequence below primepi(10^8) are 2, 3 and 4189897.
a(9) > 1.4*10^16, if it exists. - Chai Wah Wu, Apr 24 2018
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LINKS
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FORMULA
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PROG
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(PARI) n=0; forprime(p=1, 10^8, n++; (t=p-n)==1<<valuation(t, 2)&print1(n", "))
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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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EXTENSIONS
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STATUS
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approved
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