|
| |
|
|
A124408
|
|
Numbers n such that 2n+1, 4n+1 and 6n+1 are primes.
|
|
5
| |
|
|
1, 3, 18, 105, 135, 153, 165, 168, 300, 363, 585, 618, 648, 765, 828, 1110, 1140, 1278, 1518, 1530, 1533, 2130, 2223, 2400, 2475, 2613, 2790, 2925, 3075, 3180, 3345, 3420, 3483, 3810, 3840, 3843, 3933, 4008, 4083, 4095, 4143, 4260, 4263, 4323, 4470, 4545
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
MATHEMATICA
| Select[Range[4600], And @@ PrimeQ /@ ({2, 4, 6}*# + 1) &] (*Chandler*)
|
|
|
CROSSREFS
| Cf. A005097, A005098, A024899, A123998, A124409-A124411, A071576.
Sequence in context: A180036 A038158 A009021 * A136779 A106328 A007277
Adjacent sequences: A124405 A124406 A124407 * A124409 A124410 A124411
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Artur Jasinski grafixATcsl.pl, Oct 31 2006
|
| |
|
|
