login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A094896 a(n) = if 4*n+1 is prime and 4*n+3 is not prime then 4*n+1 1
0, 0, 0, 13, 0, 0, 0, 0, 0, 37, 0, 0, 0, 53, 0, 61, 0, 0, 73, 0, 0, 0, 89, 0, 97, 0, 0, 109, 113, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 157, 0, 0, 0, 173, 0, 181, 0, 0, 193, 0, 0, 0, 0, 0, 0, 0, 0, 229, 233, 0, 241, 0, 0, 0, 257, 0, 0, 0, 0, 277, 0, 0, 0, 293, 0, 0, 0, 0, 313, 317, 0, 0, 0, 0, 337, 0, 0 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

MATHEMATICA

a=Table[If[PrimeQ[4*n+1]==True&&PrimeQ[4*n+3]==False, 4*n+1, 0], {n, 0, 200}]

CROSSREFS

Sequence in context: A165970 A081357 A127708 * A067155 A073867 A114782

Adjacent sequences:  A094893 A094894 A094895 * A094897 A094898 A094899

KEYWORD

nonn

AUTHOR

Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jun 14 2004

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 18 00:14 EST 2012. Contains 206085 sequences.