login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A106010 Primes p such that 40*p - 3 and 40*p + 3 are both primes. 1

%I

%S 7,17,67,71,109,113,137,139,151,181,193,197,347,463,479,487,503,557,

%T 617,631,743,769,883,983,997,1061,1361,1523,1543,1753,1831,1847,1931,

%U 1933,2017,2027,2029,2069,2089,2111,2131,2281,2309,2339,2393,2549,2617,2659

%N Primes p such that 40*p - 3 and 40*p + 3 are both primes.

%H Michael De Vlieger, <a href="/A106010/b106010.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Prime[Range[400]], PrimeQ[40#+3]&&PrimeQ[40#-3]&]

%o (Magma) [p: p in PrimesUpTo(5000)|IsPrime(40*p+3) and IsPrime(40*p-3)] // _Vincenzo Librandi_, Jan 30 2011

%K nonn

%O 1,1

%A _Zak Seidov_, May 05 2005

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)