login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201710 Primes of the form 10n^2 + 3. 1

%I

%S 3,13,43,163,643,1213,1693,3613,4003,6763,9613,10243,12253,13693,

%T 18493,21163,22093,27043,30253,44893,49003,72253,82813,96043,100003,

%U 102013,112363,114493,141613,153763,156253,169003,179563,196003,228013

%N Primes of the form 10n^2 + 3.

%H Vincenzo Librandi, <a href="/A201710/b201710.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[10n^2+3,{n,0,800}],PrimeQ]

%o (MAGMA) [a: n in [0..300] | IsPrime(a) where a is 10*n^2+3];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 04 2011

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 20 10:43 EDT 2021. Contains 348100 sequences. (Running on oeis4.)