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A084105 Middle q of three consecutive primes p,q,r, such that one adjacent prime is near, the other is far and the ratio of the differences (whichever of (r-q)/(q-p) or (q-p)/(r-q) is greater than 1) sets a record. 2
3, 29, 113, 139, 199, 523, 1151, 1669, 2971, 6947, 10007, 16141, 25471, 40639, 79699, 102761, 173359, 265621, 404851, 838249, 1349533, 1562051, 6371537, 7230479, 27980987, 42082303, 53231051, 70396589, 192983851, 253878617, 390932389 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Are there entries other than a(3) for which the smaller difference exceeds 2?

LINKS

Hugo Pfoertner, Maximally asymmetric prime triplets, FORTRAN program

EXAMPLE

a(3)=113 because the ratio (113-109)/(127-113)=2/7=0.28571.. is smaller than the previous minimum produced by (31-29)/(29-23)=1/3=0.33333...

CROSSREFS

Cf. A084106, A031132, A008996, A002386.

Sequence in context: A106942 A100202 A094068 * A024386 A171355 A163854

Adjacent sequences:  A084102 A084103 A084104 * A084106 A084107 A084108

KEYWORD

nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), May 29 2003

EXTENSIONS

More terms from Don Reble (djr(AT)nk.ca), May 29 2003

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.