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A113887 Numbers n such that floor(exp(sqrt(n))) is a prime number. 3

%I #6 Mar 28 2023 17:09:26

%S 1,3,4,6,10,12,17,21,26,30,53,54,58,83,95,109,111,128,131,137,145,157,

%T 165,166,181,195,202,244,261,265,290,306,324,343,353,369,386,415,417,

%U 418,438,468,473,503,633,704,735,758,859,903,919,955,979,987,1008,1016

%N Numbers n such that floor(exp(sqrt(n))) is a prime number.

%t Select[ Range@1044, PrimeQ@ Floor@ Exp@ Sqrt@ # &] (* _Robert G. Wilson v_ *)

%Y Cf. A050808.

%K nonn

%O 1,2

%A _Stefan Steinerberger_, Jan 28 2006

%E More terms from _Robert G. Wilson v_, Jan 30 2006

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Last modified August 14 03:09 EDT 2024. Contains 375146 sequences. (Running on oeis4.)