login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A111871 Prime gaps q-p with n-th record merit referred to in A111870. 16
1, 2, 4, 14, 22, 34, 52, 72, 86, 96, 112, 132, 148, 180, 210, 248, 282, 320, 336, 354, 382, 456, 514, 532, 582, 588, 602, 652, 716, 766, 906, 1132, 1328, 1356, 1370, 1442, 1476 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The prime gaps q-p (corresponding to a(n)=p in A111870) have increasing record merit (q-p)/log(p). However, the prime gaps themselves are almost always monotonically increasing (with very high probability), but not always! And we do have an exception in the list above: a(14)=148 < a(13)=154! (But see next comment!)

Because the erroneous A111870(13) = 4652353 term was removed, a(13) = 154 was removed. This sequence is therefore monotonically increasing. - John W. Nicholson, Nov 18 2013

REFERENCES

Ed Pegg, Jr., Posting to Seq Fan mailing list, Nov 23, 2005

LINKS

Table of n, a(n) for n=1..37.

Jens Kruse Andersen, The Top-20 Prime Gaps

FORMULA

a(n) = A277552(n) - A111870(n). - Bobby Jacobs, Nov 13 2016

EXAMPLE

A111870(4) = 113 and the next larger prime is 127, so 127 - A111870(4) = a(4) = 14.

CROSSREFS

For the primes p corresponding to the prime gaps q-p with n-th record merit, see A111870.

Cf. A002386, A277552.

Sequence in context: A243934 A071865 A127596 * A291079 A090808 A074716

Adjacent sequences:  A111868 A111869 A111870 * A111872 A111873 A111874

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, based on correspondence with Ed Pegg Jr, Nov 23 2005

EXTENSIONS

Corrected and edited by Daniel Forgues, Nov 11 2009 and Nov 20 2009

Because the erroneous A111870(13) = 4652353 term was removed, a(13) = 154 was removed by John W. Nicholson, Nov 18 2013

a(33)-a(35) inserted by Bobby Jacobs, Nov 08 2016

a(37) added by Bobby Jacobs, Nov 09 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 10:54 EDT 2021. Contains 348211 sequences. (Running on oeis4.)