|
|
A139446
|
|
Numbers n such that primorial(n)/2 - 32 is prime.
|
|
5
|
|
|
4, 5, 6, 8, 10, 12, 23, 38, 50, 65, 67, 95, 100, 108, 114, 281, 835, 894, 1103, 3442, 6629
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
MATHEMATICA
|
k = 1; a = {}; Do[k = k*Prime[n]; If[PrimeQ[k - 32] && k>32, Print[n]; AppendTo[a, n]], {n, 2, 325}]; a
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
Drop 2,3 and correct program, a(17)-a(19) from Ray Chandler, Jun 16 2013
|
|
STATUS
|
approved
|
|
|
|