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A154405
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Primes of the form 20n^2+8n+1.
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1
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29, 97, 353, 541, 769, 1693, 2081, 4621, 8161, 9857, 13729, 14797, 17053, 19469, 24781, 26209, 32321, 35617, 42689, 48413, 54497, 65437, 72481, 77377, 85021, 87649, 95773, 98561, 125453, 141793, 148609, 152077, 166349, 177473, 185089
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..10000
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EXAMPLE
| For n=1, a(1)=29; n=2, a(2)=97
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MATHEMATICA
| Select[Table[20n^2+8n+1, {n, 0, 600}], PrimeQ]
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PROG
| (MAGMA) [a: n in [0..200] | IsPrime(a) where a is 20*n^2+8*n+1];
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CROSSREFS
| Cf. A017293
Sequence in context: A044216 A044597 A138625 * A092373 A087641 A161665
Adjacent sequences: A154402 A154403 A154404 * A154406 A154407 A154408
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KEYWORD
| nonn,easy
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AUTHOR
| Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 09 2009
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EXTENSIONS
| 12701 removed, 32321 inserted, 18609 replaced by 148609 - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2009
Misleading formula removed - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 18 2010
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