Search: id:A039949
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%I A039949
%S A039949 17,47,107,137,167,197,227,257,317,347,467,557,587,617,647,677,797,827,
%T A039949 857,887,947,977,1097,1187,1217,1277,1307,1367,1427,1487,1607,1637,1667,
%U A039949 1697,1787,1847,1877,1907,1997,2027,2087,2207,2237,2267,2297,2357,2417
%N A039949 Primes of form 30n-13.
%C A039949 This linear form produces the most primes for n between 1 and 1000 (411/ 
               1000)
%C A039949 Primes congruent to 17 (mod 30). - O. E. Pol (info(AT)polprimos.com), 
               Aug 15, 2007.
%C A039949 Also, for many prime numbers, a(n)=15*n^2+15*n+17 [From Vincenzo Librandi 
               (vincenzo.librandi(AT)tin.it), Jan 28 2009]
%C A039949 Primes ending in 7 with (SOD-1)/3 non-integer where SOD is sum of digits. 
               - Ki Punches
%D A039949 C. Clawson, Mathematical Mysteries, Plenum Press, 1996, p. 173
%H A039949 O. E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica 
               de los numeros primos y perfectos</a>.
%F A039949 a(n) = A158648(n)*30 + 17. - Chandler
%F A039949 Intersection of A030432 and A007528. - Chandler
%Y A039949 Cf. A132230-A132236.
%Y A039949 Sequence in context: A128468 A031374 A061722 this_sequence A155841 A147058 
               A083296
%Y A039949 Adjacent sequences: A039946 A039947 A039948 this_sequence A039950 A039951 
               A039952
%K A039949 nonn
%O A039949 1,1
%A A039949 Felice Russo (felice.russo(AT)katamail.com)
%E A039949 Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 07 2009

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