|
Search: id:A089161
|
|
|
| A089161 |
|
Numbers n such that 30*n+17 and 30*n+19 are twin primes. |
|
+0
2
|
|
| 0, 3, 4, 6, 7, 11, 20, 27, 28, 42, 47, 49, 53, 55, 56, 59, 62, 66, 67, 69, 74, 75, 88, 89, 105, 108, 115, 117, 118, 125, 130, 137, 138, 140, 144, 150, 151, 154, 159, 165, 180, 182, 188, 195, 206, 227, 231, 237, 243, 248, 249, 251, 258, 262, 269, 279, 284, 286, 287
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
30*3+17=107, 30*3+19=109, 107,109 twin primes
|
|
MAPLE
|
a:=proc(n) if isprime(30*n+17)=true and isprime(30*n+19)=true then n else fi end: seq(a(n), n=0..400); (Deutsch)
|
|
CROSSREFS
|
Sequence in context: A085253 A073906 A108797 this_sequence A060965 A153883 A033162
Adjacent sequences: A089158 A089159 A089160 this_sequence A089162 A089163 A089164
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
Pierre CAMI (colettecami(AT)aol.com), Dec 06 2003
|
|
EXTENSIONS
|
More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 13 2005
|
|
|
Search completed in 0.002 seconds
|
