The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A290488

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A290488

Lower ends of record gaps between numbers that are either prime or twice a prime.
(history; published version)

#29 by Alois P. Heinz at Tue Aug 08 16:48:10 EDT 2017

STATUS

proposed

approved

#28 by Bobby Jacobs at Mon Aug 07 07:19:54 EDT 2017

STATUS

editing

proposed

#27 by Bobby Jacobs at Mon Aug 07 07:19:51 EDT 2017

FORMULA

a(n) = A290489(n) - A290541(n).

CROSSREFS

Cf. A001751, A290489, A290541.

STATUS

approved

editing

#26 by OEIS Server at Fri Aug 04 15:47:34 EDT 2017

LINKS

Robert G. Wilson v, <a href="/A290488/b290488_1.txt">Table of n, a(n) for n = 1..37</a>

#25 by N. J. A. Sloane at Fri Aug 04 15:47:34 EDT 2017

STATUS

proposed

approved

Discussion

Fri Aug 04

15:47

OEIS Server: Installed new b-file as b290488.txt.  Old b-file is now b290488_1.txt.

#24 by Robert G. Wilson v at Fri Aug 04 09:06:54 EDT 2017

STATUS

editing

proposed

Discussion

Fri Aug 04

13:14

Omar E. Pol: The Wilson's table contains on two more terms than the terms in the data section. Suggest to move both the 36th and 37th terms from the table to the data section and then suggest to delete the table.

15:47

N. J. A. Sloane: But someone else will no doubt extend the b-file soon, so let's leave it as is

#23 by Robert G. Wilson v at Fri Aug 04 09:06:34 EDT 2017

LINKS

Robert G. Wilson v, <a href="/A290488/b290488_1.txt">Table of n, a(n) for n = 1..3537</a>

STATUS

proposed

editing

#22 by Bobby Jacobs at Fri Aug 04 07:14:07 EDT 2017

STATUS

editing

proposed

Discussion

Fri Aug 04

08:50

Robert G. Wilson v: Yes, I initially analyzed it incorrectly.

#21 by Bobby Jacobs at Fri Aug 04 07:14:04 EDT 2017

COMMENTS

The gap between 31397 and 31454 is due to the record prime gap between 31397 and 31469 being almost exactly twice the record prime gap between 15683 and 15727.

STATUS

reviewed

editing

#20 by Robert G. Wilson v at Fri Aug 04 01:11:54 EDT 2017

STATUS

proposed

reviewed

Discussion

Fri Aug 04

07:05

Bobby Jacobs: 67 is not a record because it has a gap of 4, while 47 has a bigger gap of 6.