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Search: id:A154405
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| A154405 |
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Primes of the form 20n^2+8n+1 |
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+0
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
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OFFSET
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1,1
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FORMULA
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a(n)=20n^2+8n+1
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EXAMPLE
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For n=1, a(1)=29; n=2, a(2)=97
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CROSSREFS
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Cf. A017293
Sequence in context: A044216 A044597 A138625 this_sequence A092373 A087641 A161665
Adjacent sequences: A154402 A154403 A154404 this_sequence A154406 A154407 A154408
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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), Jan 09 2009
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EXTENSIONS
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12701 removed, 32321 inserted, 18609 replaced by 148609 - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2009
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