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Search: id:A135590
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| A135590 |
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Numbers n such that n^2 + 1 is a Sarrus number (pseudo-prime to base 2). |
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+0
1
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| 216, 948, 1560, 4872, 8208, 9828, 18200, 29640, 37024, 65536, 89550, 283800, 535920, 592956, 649800, 825930, 1042320, 1382400, 1536220, 3688230, 4215120, 4321800, 5103210, 19078930, 21415680, 24471720, 214067490, 435457620, 535019100
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OFFSET
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1,1
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MATHEMATICA
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fQ[n_] := ( !PrimeQ[n^2 + 1] && PowerMod[2, n^2, n^2 + 1] == 1); lst = {}; Do[ If[ fQ@ n, AppendTo[lst, n]], {n, 2, 440000000, 2}]; lst - from Robert G. Wilson v, (rgwv(AT)rgwv.com), Apr 18 2008
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CROSSREFS
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Cf. A001567.
Adjacent sequences: A135587 A135588 A135589 this_sequence A135591 A135592 A135593
Sequence in context: A043371 A074266 A066890 this_sequence A111029 A124581 A016863
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Feb 25 2008
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EXTENSIONS
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More terms from Robert G. Wilson v, (rgwv(AT)rgwv.com), Apr 18 2008
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