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A002346 Consider all primes of form p = (x^2 + 11y^2 )/4; sequence gives values of x.
(Formerly M2206 N0877)
2
1, 3, 0, 9, 5, 7, 12, 6, 15, 13, 3, 9, 17, 4, 21, 3, 23, 16, 21, 25, 15, 20, 1, 5, 27, 18, 30, 12, 19, 27, 35, 9, 37, 25, 39, 15, 2, 30, 24, 10, 29, 21, 39, 31, 3, 43, 40, 45, 15, 47, 48, 36, 42, 1, 7, 45, 41, 27, 51, 13, 24, 17, 19, 51, 53, 23, 38, 54, 3, 49, 29, 45 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

REFERENCES

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

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

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

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

LINKS

Table of n, a(n) for n=3..74.

A. J. C. Cunningham, Quadratic Partitions, Hodgson, London, 1904 [Annotated scans of selected pages]

CROSSREFS

Cf. A002347, A056874.

Sequence in context: A154202 A214699 A317825 * A021327 A297053 A167313

Adjacent sequences:  A002343 A002344 A002345 * A002347 A002348 A002349

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 2 14:21 EDT 2020. Contains 334787 sequences. (Running on oeis4.)