|
| |
|
|
A072669
|
|
Primes of the form prime(x) + prime(x+1) - 1.
|
|
6
| |
|
|
7, 11, 17, 23, 29, 41, 59, 67, 83, 89, 127, 137, 151, 197, 239, 257, 307, 359, 383, 389, 409, 433, 449, 461, 479, 491, 547, 557, 563, 599, 617, 647, 683, 701, 739, 751, 761, 797, 809, 827, 839, 863, 881, 929, 977, 1063, 1087, 1103, 1163, 1229, 1249, 1283, 1289, 1319, 1373
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Consider m such that prime(m) + prime(m+1) = prime(k) + 1 for some k; sequence gives prime(k).
|
|
|
MATHEMATICA
| f[n_] := Prime[n] + Prime[n + 1] - 1; f[ # ] & /@ Select[ Range[120], PrimeQ[ f[ # ]] &] (from Robert G. Wilson v Apr 14 2004)
|
|
|
CROSSREFS
| Cf. A001043, A092738, A072666, A072667.
Sequence in context: A063639 A131229 A092737 * A108101 A158350 A048203
Adjacent sequences: A072666 A072667 A072668 * A072670 A072671 A072672
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Herman H. Rosenfeld (herm3(AT)pacbell.net), Aug 12 2002
|
|
|
EXTENSIONS
| Definition rewordrd by Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Apr 12 2004
Edited by N. J. A. Sloane (njas(AT)research.att.com), Sep 14 2008 at the suggestion of R. J. Mathar
|
| |
|
|
