A059303 Numbers k such that floor(e^k) + 1 is prime.

0, 1, 5, 7, 10, 105, 22959, 34888

Offset

1,3

Comments

0 followed by all k such that ceiling(e^k) is prime. - Jeppe Stig Nielsen, Feb 12 2024

Links

Table of n, a(n) for n=1..8.

Eric Weisstein's World of Mathematics, e-Prime

Mathematica

Select[Range[40000], PrimeQ[Floor[E^#] + 1] &] (* G. C. Greubel, Jan 06 2017 *)

Prog

(PARI) isok(k) = isprime(floor(exp(k))+1) \\ Michel Marcus, Jun 08 2013

Crossrefs

Cf. A001671, A050808.

Sequence in context: A141443 A215660 A015849 * A061523 A119653 A023592

Adjacent sequences: A059300 A059301 A059302 * A059304 A059305 A059306

Keyword

nonn,more

Author

Felice Russo, Jan 25 2001

Extensions

Corrected by Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 25 2001

a(7)-a(8) from Donovan Johnson

Status

approved