A002346 Consider all primes of form p = (x^2 + 11y^2 )/4; sequence gives values of x. (Formerly M2206 N0877)

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

Offset

1,2

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=1..72.

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

Crossrefs

Cf. A002347, A056874.

Sequence in context: A352491 A214699 A317825 * A021327 A297053 A167313

Adjacent sequences: A002343 A002344 A002345 * A002347 A002348 A002349

Keyword

nonn

Author

N. J. A. Sloane

Extensions

Offset corrected by Mohammed Yaseen, Jul 24 2023

Status

approved