editing

approved

m = 4; 1 + Select[ Range[2000], Prime[ # + 2] - 2*Prime[ # + 1] + Prime[ # ] - 4*m == 0 &] (from * _Robert G. Wilson v _, Jul 14 2004 *)

approved

editing

_Roger L. Bagula_, Jul 02 2004

_Roger Bagula (rlbagulatftn(AT)yahoo.com), _, Jul 02 2004

Edited and extended by _Robert G. Wilson v (rgwv(AT)rgwv.com), _, Jul 14 2004

Edited by _N. J. A. Sloane (njas(AT)research.att.com), _, Nov 07 2005

nonn,new

nonn

Edited by N. J. A. Sloane (njas, (AT)research.att.com), Nov 07 2005

Numbers that give Indices of the fourth primes in A095651: A095651(n) = prime chords(a(n)).

These come from music based on the prime differences where the chords are an even number of note steps from the primary note: a(n)=(Prime(n+1)-Prime[n])/2 a(n) +2*m=a(n+1) Prime Implicit is: Prime[n+2]-2*Prime[n+1]+Prime[n]-4*m==0

a(n)=(Prime(n+1)-Prime[n])/2 a(n) +2*m=a(n+1) m=4

Cf. A095651, A095648, A095419, A095648, A095649, A095650, A095651, A095672, A095673.

nonn,uned,obsc,new

nonn

Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jul 02 2004

I still can't understand this. - njas, Jul 15 2004

Needs to be edited in same way as A095649 and A095672. - njas, Jul 19 2004

Edited by njas, Nov 07 2005

nonn,uned,obsc,new

Roger L. Bagula (tftnrlbagulatftn(AT)earthlinkyahoo.netcom), Jul 02 2004

Numbers that give the fourth prime chords.

99, 154, 189, 375, 462, 522, 548, 557, 573, 602, 641, 650, 721, 834, 836, 838, 937, 945, 1010, 1066, 1095, 1106, 1127, 1158, 1277, 1302, 1355, 1381, 1396, 1423, 1444, 1556, 1577, 1592, 1625, 1654, 1662, 1663, 1669, 1683, 1754, 1792, 1818, 1861, 1887, 1944

1,1

These come from music based on the prime differences where the chords are an even number of note steps from the primary note: a(n)=(Prime(n+1)-Prime[n])/2 a(n) +2*m=a(n+1) Prime Implicit is: Prime[n+2]-2*Prime[n+1]+Prime[n]-4*m==0

a(n)=(Prime(n+1)-Prime[n])/2 a(n) +2*m=a(n+1) m=4

m = 4; 1 + Select[ Range[2000], Prime[ # + 2] - 2*Prime[ # + 1] + Prime[ # ] - 4*m == 0 &] (from Robert G. Wilson v Jul 14 2004)

Cf. A095651, A095648, A095419, A095650.

nonn,uned,obsc

Roger L. Bagula (tftn(AT)earthlink.net), Jul 02 2004

Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 14 2004

I still can't understand this. - njas, Jul 15 2004

Needs to be edited in same way as A095649 and A095672. - njas, Jul 19 2004

approved