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A077008
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Legendre symbol(p(n)-1,p(n)), n > 1.
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0
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-1, 1, -1, -1, 1, 1, -1, -1, 1, -1, 1, 1, -1, -1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, 1, -1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, -1, -1, 1, -1, -1, 1, 1, 1, 1, -1, 1, -1, 1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, 1, -1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,1
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COMMENTS
| 1. p(n) denotes the n-th prime. 2. phi(p(n)) = p(n)-1.
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MATHEMATICA
| p = Table[Prime[i], {i, 2, 101}]; Table[JacobiSymbol[p[[j]] - 1, p[[j]]], {j, 1, 100}]
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CROSSREFS
| Cf. A070750. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 20 2008]
Sequence in context: A157895 A063747 * A158387 A008836 A087960 A164660
Adjacent sequences: A077005 A077006 A077007 * A077009 A077010 A077011
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KEYWORD
| sign
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AUTHOR
| Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Nov 28 2002
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