login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A014547 n-th Euler (secant, zig) number A000364(n) is prime. 2
2, 3, 19, 227, 255 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Euler Number.
Eric Weisstein's World of Mathematics, Integer Sequence Primes
MATHEMATICA
Select[Range[100], PrimeQ[EulerE[#]] &]/2 (* Harvey P. Dale, Aug 10 2011 *)
CROSSREFS
Cf. A000364.
Sequence in context: A061490 A048827 A032077 * A066735 A232498 A254380
KEYWORD
more,nonn
AUTHOR
EXTENSIONS
Offset corrected by Arkadiusz Wesolowski, Oct 17 2011
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 12 19:36 EDT 2024. Contains 374252 sequences. (Running on oeis4.)