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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A138657 Primes p such that 48*p-1 and 48*p+1 are twin primes. 0
5, 31, 89, 109, 271, 331, 571, 599, 661, 709, 719, 761, 859, 1109, 1171, 1319, 1489, 1619, 1699, 1811, 2399, 2971, 3041, 3119, 3329, 3449, 3659, 4211, 4421, 4861, 5051, 5309, 5441, 6011, 6379, 6491, 6571, 6661, 7039 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

EXAMPLE

48*5-1=239, 48*5+1=241; 48*31-1=1487, 48*31+1=1489;...

MATHEMATICA

a=48; Select[Prime[Range[10^3]], PrimeQ[a*#-1]&&PrimeQ[a*#+1]&]

CROSSREFS

Sequence in context: A299505 A102732 A213068 * A106909 A304659 A115519

Adjacent sequences:  A138654 A138655 A138656 * A138658 A138659 A138660

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, May 15 2008

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 16 16:18 EDT 2019. Contains 328101 sequences. (Running on oeis4.)