A002647 Sextan primes: p = (x^6 + y^6)/(x^2 + y^2). (Formerly M4900 N2100)

13, 61, 73, 193, 241, 541, 601, 1021, 1801, 1873, 1933, 2221, 3121, 3361, 4993, 5521, 6481, 8461, 9181, 9901, 10993, 11113, 12241, 12541, 13633, 14173, 17761, 20593, 21433, 21661, 21841, 23773, 26113, 27901, 28393, 29101, 34141, 41161, 49201

Offset

1,1

References

A. J. C. Cunningham, Binomial Factorisations, Vols. 1-9, Hodgson, London, 1923-1929; see Vol. 1, pp. 245-259.

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..39.

A. J. C. Cunningham, Binomial Factorisations, Vols. 1-9, Hodgson, London, 1923-1929. [Annotated scans of a few pages from Volumes 1 and 2]

Crossrefs

Sequence in context: A145474 A359666 A217606 * A306127 A118711 A316309

Adjacent sequences: A002644 A002645 A002646 * A002648 A002649 A002650

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Klaus Brockhaus, Jun 03 2009

Status

approved