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A002970
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Numbers n such that 4*n^2 + 9 is prime.
(Formerly M3248)
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1
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1, 4, 5, 10, 16, 19, 20, 26, 29, 31, 35, 41, 44, 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, 206, 211, 224, 236, 241, 245, 251, 256, 265, 269, 271, 284, 286, 289, 299, 304, 314
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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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).
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LINKS
| T. D. Noe, Table of n, a(n) for n = 1..1000
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PROG
| (MAGMA)[n: n in [0..600]|IsPrime(4*n^2+9)] [From V. Librandi, Nov 21 2010]
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CROSSREFS
| Sequence in context: A131780 A102006 A118735 * A073611 A058594 A022309
Adjacent sequences: A002967 A002968 A002969 * A002971 A002972 A002973
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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