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A002367 Let p = A007645(n) be the n-th generalized cuban prime and write p^2 = x^2 + 3*y^2 with y > 0; a(n) = x.
(Formerly M4773 N1377)
2

%I M4773 N1377 #27 Oct 15 2023 01:41:13

%S 1,11,13,23,13,11,37,61,23,71,1,97,107,73,11,143,59,131,157,191,193,

%T 83,169,13,143,121,61,229,179,71,181,241,251,359,349,347,181,313,179,

%U 431,47,407,263,481,13,491,517,253,443,481,263,407,563,107,337,157,61

%N Let p = A007645(n) be the n-th generalized cuban prime and write p^2 = x^2 + 3*y^2 with y > 0; a(n) = x.

%D A. J. C. Cunningham, Quadratic and Linear Tables. Hodgson, London, 1927, pp. 77-79.

%D D. H. Lehmer, Guide to Tables in the Theory of Numbers. Bulletin No. 105, National Research Council, Washington, DC, 1941, p. 60.

%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H T. D. Noe, <a href="/A002367/b002367.txt">Table of n, a(n) for n = 2..1000</a>

%H A. J. C. Cunningham, <a href="/A002365/a002365.pdf">Quadratic and Linear Tables</a>, Hodgson, London, 1927. [Annotated scanned copy of selected pages]

%Y Cf. A002368, A007645.

%K nonn

%O 2,2

%A _N. J. A. Sloane_

%E Name improved and offset changed by _T. D. Noe_, Apr 13 2010

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Last modified April 24 19:31 EDT 2024. Contains 371962 sequences. (Running on oeis4.)