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!)
A138307 Even numbers not representable as p+g, where p is a prime and g is a prime primitive root of p. 2

%I #2 Mar 30 2012 17:22:47

%S 2,4,6,14,16,26,36,38,64,100,144,196,206,256,324,332,400,484,530,576,

%T 676,784,900,1024,1156,1296,1444,1600,1764,1936,2116,2304,2500,2704,

%U 2916,3136,3364,3600,3844,4096,4356,4624,4900,5184,5476,5776,6084,6400

%N Even numbers not representable as p+g, where p is a prime and g is a prime primitive root of p.

%C This sequence appears to contain the squares of all even numbers (A016742) and a thin set of other numbers (A138318).

%Y Cf. A138305 (prime primitive roots).

%K nonn

%O 1,1

%A _T. D. Noe_, Mar 14 2008

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 April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)