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A002732 Numbers n such that (4n^2 + 1)/5 is prime.
(Formerly M3281 N1324)
+0
1
4, 6, 11, 14, 21, 24, 26, 29, 31, 39, 44, 46, 51, 54, 76, 79, 89, 94, 99, 101, 111, 119, 124, 129, 131, 136, 146, 149, 154, 156, 164, 176, 179, 181, 194, 201, 211, 214, 229, 231, 239 (list; graph; listen)
OFFSET

1,1

REFERENCES

L. Euler, De numeris primis valde magnis (E283), reprinted in: Opera Omnia. Teubner, Leipzig, 1911, Series (1), Vol. 3, p. 24.

CROSSREFS

Adjacent sequences: A002729 A002730 A002731 this_sequence A002733 A002734 A002735

Sequence in context: A094226 A047288 A096833 this_sequence A036831 A084263 A060180

KEYWORD

nonn,easy

AUTHOR

njas

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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