login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A157183 Primes in A028883, p=m^2-7, such that following prime is m^2+1. 2
2909, 4349, 8093, 24329, 57593, 72893, 93629, 224669, 324893, 331769, 404489, 562493, 608393, 1166393, 1742393, 1822493, 4137149, 4639709, 5788829, 7289993, 7617593, 10265609, 10497593, 10929629, 12110393, 12362249, 14107529, 14243069 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A subset of { A028883(n) | A028882(n) is in A005574 }.

LINKS

Table of n, a(n) for n=1..28.

PROG

(PARI) forstep( m=4, 10^4, 2, ispseudoprime( m^2-7 )|next; ispseudoprime( m^2+1 )|next; nextprime(m^2-5)==(m^2+1) & print1(m^2-7, ", "))

CROSSREFS

Sequence in context: A247317 A236742 A210072 * A054829 A203376 A183360

Adjacent sequences:  A157180 A157181 A157182 * A157184 A157185 A157186

KEYWORD

nonn

AUTHOR

M. F. Hasler, Mar 14 2009

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified November 22 10:27 EST 2014. Contains 249805 sequences.