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A002368 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) = y.
(Formerly M3228 N1337)
2

%I M3228 N1337 #23 Oct 15 2023 02:00:06

%S 4,4,8,12,20,24,28,16,40,20,56,20,12,60,80,28,84,56,52,16,28,112,84,

%T 132,112,140,156,96,144,176,160,136,140,44,76,88,204,152,220,24,252,

%U 120,220,44,288,104,92,280,208,184,312,260,140,352,308,360,380,200

%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) = y.

%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="/A002368/b002368.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. A002367, A007645.

%K nonn

%O 2,1

%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 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)