|
Search: id:A126955
|
|
|
| A126955 |
|
Numbers n such that 2n+1, 3n+2 and 4n+3 are primes. |
|
+0
2
|
|
| 1, 5, 65, 89, 119, 215, 455, 755, 779, 965, 1175, 1349, 1409, 1469, 1679, 1745, 1769, 1889, 1955, 2009, 2105, 2435, 2519, 2525, 2585, 2639, 4685, 5045, 5165, 5735, 5915, 5969, 6725, 7415, 7469, 7895, 8045, 9065, 9365, 9449, 9659, 9779, 9959, 10379
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
Take n = 89. Then 2*89 + 1 = 179, 3*89 + 2 = 269 and 4*89 + 3 = 359 are primes.
|
|
MATHEMATICA
|
Select[Range[10500], PrimeQ[2# + 1] && PrimeQ[3# + 2] && PrimeQ[4# + 3] &] (*Chandler*)
|
|
CROSSREFS
|
Intersection of A005097, A024893, A095278. Cf. A126956.
Sequence in context: A073179 A061684 A061698 this_sequence A091105 A071902 A052199
Adjacent sequences: A126952 A126953 A126954 this_sequence A126956 A126957 A126958
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
J. M. Bergot (thekingfishb(AT)yahoo.ca), Mar 19 2007
|
|
EXTENSIONS
|
Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Robert G. Wilson v and Stuart Clary, Mar 20 2007
|
|
|
Search completed in 0.002 seconds
|
