|
Search: id:A095672
|
|
|
| A095672 |
|
Primes p = p_(n+1) such that p_n + p_(n+2) = 2*p_(n+1) + 4. |
|
+0
8
|
|
| 31, 61, 73, 151, 271, 293, 337, 401, 433, 491, 547, 571, 577, 601, 743, 761, 839, 911, 1033, 1039, 1063, 1201, 1231, 1291, 1321, 1409, 1453, 1531, 1571, 1621, 1627, 2003, 2017, 2039, 2131, 2243, 2273, 2341, 2383, 2551, 2663, 2713, 2719, 2791, 3041, 3049
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Primes that are first prime chords.
These come from music based on the prime differences where the chords are an even number of note steps from the primary note.
|
|
EXAMPLE
|
31 is a term because 29+37 = 2*31 + 4 = 66.
|
|
MATHEMATICA
|
m = 1; Prime[1 + Select[ Range[450], Prime[ # + 2] - 2*Prime[ # + 1] + Prime[ # ] - 4*m == 0 &]] (from Robert G. Wilson v Jul 14 2004)
|
|
CROSSREFS
|
Cf. A095419, A095420, A095648, A095649, A095650, A095651, A095673.
Sequence in context: A063339 A115833 A052158 this_sequence A073650 A078562 A054804
Adjacent sequences: A095669 A095670 A095671 this_sequence A095673 A095674 A095675
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jul 02 2004
|
|
EXTENSIONS
|
Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 14 2004
Description corrected by N. J. A. Sloane (njas(AT)research.att.com), Jul 19 2004.
|
|
|
Search completed in 0.002 seconds
|
