|
| |
|
|
A139455
|
|
Numbers n such that primorial(n)/2 + 1024 is prime.
|
|
24
| |
|
|
3, 4, 5, 7, 11, 14, 15, 22, 30, 32, 37, 53, 83, 123, 156, 212, 215
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
MATHEMATICA
| k = 1; a = {}; Do[k = k*Prime[n]; If[PrimeQ[k + 1024], Print[n]; AppendTo[a, n]], {n, 2, 325}]; a (*Artur Jasinski*)
|
|
|
CROSSREFS
| Cf. A067026, A067027, A139439, A139440, A139441, A139442, A139443, A139444, A139445, A139446, A139447, A139448, A139449, A139450, A139451, A139452, A139453, A139454, A139455, A139456, A139457, A103514.
Sequence in context: A107036 A001605 A101762 * A095880 A076497 A137950
Adjacent sequences: A139452 A139453 A139454 * A139456 A139457 A139458
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Apr 21 2008
|
| |
|
|
