Search: id:A002345
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%I A002345 M0197 N0074
%S A002345 1,1,1,2,2,1,2,3,1,3,1,2,4,3,4,2,1,3,5,5,4,2,5,4,5,1,6,4,2,1,4,7,7,6,7,
%T A002345 2,4,6,5,7,8,8,3,7,1,5,6,3,2,8,9,7,6,8,9,4,2,5,8,1,10,10,3,7,5,2,8,10,
               9,7
%N A002345 Numbers y such that p = x^2 + 7y^2, with prime p = A033207(n).
%D A002345 A. J. C. Cunningham, Quadratic Partitions. Hodgson, London, 1904, p. 
               1.
%D A002345 D. H. Lehmer, Guide to Tables in the Theory of Numbers. Bulletin No. 
               105, National Research Council, Washington, DC, 1941, p. 55.
%D A002345 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002345 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A002345 T. D. Noe, <a href="b002345.txt">Table of n, a(n) for n=1..1000</a>
%Y A002345 Cf. A002344.
%Y A002345 Sequence in context: A075445 A023572 A077766 this_sequence A071694 A072781 
               A046923
%Y A002345 Adjacent sequences: A002342 A002343 A002344 this_sequence A002346 A002347 
               A002348
%K A002345 nonn
%O A002345 1,4
%A A002345 N. J. A. Sloane (njas(AT)research.att.com).

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