|
| |
|
|
A038580
|
|
Primes with indices that are primes with prime indices.
|
|
22
| |
|
|
5, 11, 31, 59, 127, 179, 277, 331, 431, 599, 709, 919, 1063, 1153, 1297, 1523, 1787, 1847, 2221, 2381, 2477, 2749, 3001, 3259, 3637, 3943, 4091, 4273, 4397, 4549, 5381, 5623, 5869, 6113, 6661, 6823, 7193, 7607, 7841, 8221, 8527, 8719, 9319, 9461, 9739
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
REFERENCES
| R. E. Dressler and S. T. Parker, Primes with a prime subscript, J. ACM, 22 (1975), 380-381.
|
|
|
LINKS
| T. D. Noe, Table of n, a(n) for n = 1..1000
N. Fernandez, An order of primeness, F(p)
N. Fernandez, More terms of this and other sequences related to A049076.
|
|
|
FORMULA
| a(n) = primes(primes(primes(n))).
|
|
|
MATHEMATICA
| Table[ Prime[ Prime[ Prime[ n ] ] ], {n, 1, 60} ]
Nest[ Prime, Range[45], 3] (from Robert G. Wilson v Mar 15 2004)
|
|
|
CROSSREFS
| Primes for which A049076(p)>2.
Cf. A049076, A000040, A006450, A049090, A049203, A049202, A057849, A057850, A057851, A057847, A058332, A093047.
Sequence in context: A105910 A023259 A057470 * A106088 A077446 A023276
Adjacent sequences: A038577 A038578 A038579 * A038581 A038582 A038583
|
|
|
KEYWORD
| easy,nonn,nice
|
|
|
AUTHOR
| Brian L. Galebach (sequence(AT)ProbabilitySports.com)
|
| |
|
|
