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A002340 x such that p = x^2 - 5y^2.
(Formerly M3739 N1528)
+0
2
5, 4, 8, 7, 6, 11, 8, 9, 14, 18, 13, 11, 17, 16, 12, 13, 14, 28, 19, 14, 18, 16, 27, 22, 31, 16, 17, 26, 19, 24, 24, 23, 22, 28, 37, 41, 27, 32, 21, 26, 22, 23, 31, 22, 44, 48, 23 (list; graph; listen)
OFFSET

5,1

REFERENCES

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

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

D. H. Lehmer, Guide to Tables in the Theory of Numbers. Bulletin No. 105, National Research Council, Washington, DC, 1941, p. 55.

A. J. C. Cunningham, Quadratic Partitions. Hodgson, London, 1904, p. 1.

CROSSREFS

Cf. A002341.

Sequence in context: A081818 A023848 A065015 this_sequence A023845 A166517 A051555

Adjacent sequences: A002337 A002338 A002339 this_sequence A002341 A002342 A002343

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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