|
|
A162001
|
|
Initial members of prime triples (p, p+2, p+6) for which also the sum 3p+8 is prime.
|
|
1
|
|
|
5, 11, 17, 41, 101, 311, 347, 641, 857, 1301, 1427, 1481, 2237, 2687, 3461, 3527, 4001, 4787, 8861, 10457, 11171, 11777, 13691, 14627, 19421, 19991, 21017, 21557, 22271, 24917, 25997, 26261, 26681, 26711, 27737, 29021, 31511, 32057, 33347, 35591
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
A subsequence of A022004 (= initial members of prime triples (p, p+2, p+6)). - Emeric Deutsch, Jul 12 2009
|
|
LINKS
|
|
|
EXAMPLE
|
(5,7,11) => 23 is prime.
|
|
MAPLE
|
a := proc (n) if isprime(n) = true and isprime(n+2) = true and isprime(n+6) = true and isprime(3*n+8) = true then n else end if end proc: seq(a(n), n = 1 .. 50000); # Emeric Deutsch, Jul 12 2009
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Milton L. Brown (miltbrown(AT)earthlink.net), Jun 24 2009
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|