OFFSET
1,1
COMMENTS
Primes of the form 3x^2 + 4y^2. - T. D. Noe, May 08 2005
It appears that all terms starting from term 103 are primes which are the sum of 5 positive (n > 0) different squares in more than one way (A193143) - Vladimir Joseph Stephan Orlovsky, Jul 16 2011.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
FORMULA
a(n) ~ 4n log n. - Charles R Greathouse IV, Dec 07 2022
MATHEMATICA
Select[Prime/@Range[250], Mod[#, 12] == 7 &]
PROG
(PARI) for(i=1, 250, if(prime(i)%12==7, print(prime(i))))
(Magma) [ p: p in PrimesUpTo(1400) | p mod 12 in {7} ]; // Vincenzo Librandi, Jul 14 2012
(PARI) is_A068229(n)=n%12==7 && isprime(n) \\ then, e.g.,
select(is_A068229, primes(250)) \\ - M. F. Hasler, Jan 25 2013
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Ferenc Adorjan (fadorjan(AT)freemail.hu), Feb 22 2002
EXTENSIONS
Edited by Dean Hickerson, Feb 27 2002
STATUS
approved