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A228127
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Numbers n such that first n digits of A091724 (Decimal expansion of E^(2*EulerGamma)) gives a prime number.
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0
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OFFSET
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1,2
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COMMENTS
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a(5) > 10^4.
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LINKS
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Table of n, a(n) for n=1..4.
Eric Weisstein's World of Mathematics, ConstantPrimes
Eric Weisstein's World of Mathematics, IntegerSequencePrimes
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MATHEMATICA
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nn=1100; With[{c=RealDigits[E^(2*EulerGamma), 10, nn][[1]]}, Select[ Range[ nn], PrimeQ[FromDigits[Take[c, #]]]&]] (* Harvey P. Dale, Nov 13 2014 *)
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CROSSREFS
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Cf. A091724.
Sequence in context: A136611 A004898 A062920 * A327660 A036111 A359323
Adjacent sequences: A228124 A228125 A228126 * A228128 A228129 A228130
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KEYWORD
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nonn,more,base
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AUTHOR
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Robert Price, Aug 26 2013
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STATUS
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approved
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