A082889 - OEIS

A082889

Primes p such that (r-p)/log(p) > 4, where r is the next prime after p.

1327, 15683, 16141, 19333, 19609, 20809, 25471, 28229, 31397, 31907, 34061, 34981, 35617, 35677, 36389, 37907, 40289, 40639, 43331, 43801, 44293, 45893, 48679, 58831, 59281, 60539, 69263, 73189, 74959, 79699, 81463, 82073, 85933, 86629

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OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..2500 from Harvey P. Dale)

FORMULA

prime(j) such that (prime(j+1)-prime(j))/log(prime(j)) > 4.

EXAMPLE

If p = 1327 then r = 1361 and (r-p)/log(p) = 34/log(1327) = 4.72834..., so 1327 is in the sequence.

MATHEMATICA

Do[s=(Prime[n+1]-Prime[n])/Log[Prime[n]]//N; If[s>4, Print[Prime[n]]], {n, 1, 2000}]

Transpose[Select[Partition[Prime[Range[10000]], 2, 1], (#[[2]]-#[[1]])/ Log[ #[[1]]]>4&]][[1]] (* Harvey P. Dale, Dec 10 2014 *)

CROSSREFS

Cf. A082862, A082884, A082885, A082886, A082888, A082890, A082891.

Sequence in context: A134116 A122390 A075038 * A109568 A235234 A250873

Adjacent sequences: A082886 A082887 A082888 * A082890 A082891 A082892

KEYWORD

nonn,changed

AUTHOR

Labos Elemer, Apr 17 2003

STATUS

approved