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Search: id:A156252
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| A156252 |
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Primes of the form 4*n^2+6*n+43 |
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+0
1
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| 43, 53, 71, 97, 131, 173, 223, 281, 347, 421, 503, 593, 691, 797, 911, 1033, 1163, 1301, 1447, 1601, 1933, 2111, 2297, 2693, 2903, 3121, 3347, 3581, 3823, 4073, 4597, 4871, 5153, 5443, 5741, 6047, 6361, 7013, 7351, 8783, 9161, 9547, 9941, 10343, 10753
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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4*n^2+6*n+43 is a prime number for all 0<n<20; n=0, p=43; n=1, p=53; n=2, p=71; n=3, p=97; and so on, n=19, p=1601;
Subsequence of A005846. (Substitute n=2k+1 in the definition of A005846 to show this.) [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2009]
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LINKS
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Vincenzo Librandi, Re: Prime Generating Polynomials>
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CROSSREFS
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Sequence in context: A128653 A080104 A095744 this_sequence A166491 A127880 A078132
Adjacent sequences: A156249 A156250 A156251 this_sequence A156253 A156254 A156255
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KEYWORD
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nonn
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AUTHOR
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Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Feb 07 2009
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