|
|
A086176
|
|
Numbers n such that n*prime(n)+3 is prime.
|
|
7
|
|
|
1, 4, 10, 20, 22, 28, 34, 38, 46, 56, 62, 92, 98, 112, 146, 148, 154, 166, 170, 176, 178, 200, 208, 254, 256, 260, 262, 266, 284, 340, 346, 352, 364, 394, 406, 412, 418, 460, 476, 500, 514, 524, 548, 550, 560, 574, 584, 586, 590, 610, 614, 620, 656, 664, 698
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[Range[1000], PrimeQ[ # Prime[ # ]+3]&]
|
|
PROG
|
(Magma) [n: n in [1..800] | IsPrime(n*NthPrime(n) + 3)]; // Vincenzo Librandi, Oct 05 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|