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A002970 Numbers n such that 4 n^2 + 9 is prime.
(Formerly M3248)
+0
1
1, 4, 5, 10, 16, 19, 20, 26, 29, 31, 35, 41, 43, 49, 50, 55, 56, 59, 70, 71, 80, 85, 94, 95, 100, 101, 106, 109, 110, 121, 149, 154, 160, 166, 175, 179, 184, 190, 191, 200, 205 (list; graph; listen)
OFFSET

1,2

REFERENCES

E. Kogbetliantz and A. Krikorian, Handbook of First Complex Prime Numbers, Gordon and Breach, NY, 1971, p. 1.

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

CROSSREFS

Sequence in context: A131780 A102006 A118735 this_sequence A073611 A058594 A022309

Adjacent sequences: A002967 A002968 A002969 this_sequence A002971 A002972 A002973

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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