The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A237658

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A237658

Positive integers m with pi(m) and pi(m^2) both prime, where pi(.) is given by A000720.
(history; published version)

#21 by OEIS Server at Sat Apr 28 03:40:32 EDT 2018

LINKS

Chai Wah Wu, <a href="/A237658/b237658_3.txt">Table of n, a(n) for n = 1..10001</a> (n = 1..3000 from Zhi-Wei Sun)

#20 by Michel Marcus at Sat Apr 28 03:40:32 EDT 2018

STATUS

reviewed

approved

Discussion

Sat Apr 28

03:40

OEIS Server: Installed new b-file as b237658.txt.  Old b-file is now b237658_3.txt.

#19 by Joerg Arndt at Sat Apr 28 03:25:41 EDT 2018

STATUS

proposed

reviewed

#18 by Michel Marcus at Sat Apr 28 02:12:47 EDT 2018

STATUS

editing

proposed

#17 by Michel Marcus at Sat Apr 28 02:12:42 EDT 2018

PROG

(PARI) isok(n) = isprime(primepi(n)) && isprime(primepi(n^2)); \\ Michel Marcus, Apr 28 2018

STATUS

proposed

editing

#16 by Chai Wah Wu at Fri Apr 27 21:34:54 EDT 2018

STATUS

editing

proposed

#15 by Chai Wah Wu at Fri Apr 27 21:34:10 EDT 2018

LINKS

Zhi-Wei Sun, Chai Wah Wu, <a href="/A237658/b237658_3.txt">Table of n, a(n) for n = 1..10001</a> (n = 1..3000</a> from Zhi-Wei Sun)

STATUS

approved

editing

#14 by OEIS Server at Tue Feb 11 05:24:42 EST 2014

LINKS

Zhi-Wei Sun, <a href="/A237658/b237658_2.txt">Table of n, a(n) for n = 1..3000</a>

#13 by Bruno Berselli at Tue Feb 11 05:24:41 EST 2014

STATUS

proposed

approved

Discussion

Tue Feb 11

05:24

OEIS Server: Installed new b-file as b237658.txt.  Old b-file is now b237658_2.txt.

#12 by Zhi-Wei Sun at Tue Feb 11 03:45:07 EST 2014

STATUS

editing

proposed