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Search: id:A063988
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| A063988 |
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Triangle in which n-th row gives quadratic non-residues modulo the n-th prime. |
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+0
2
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| 2, 2, 3, 3, 5, 6, 2, 6, 7, 8, 10, 2, 5, 6, 7, 8, 11, 3, 5, 6, 7, 10, 11, 12, 14, 2, 3, 8, 10, 12, 13, 14, 15, 18, 5, 7, 10, 11, 14, 15, 17, 19, 20, 21, 22, 2, 3, 8, 10, 11, 12, 14, 15, 17, 18, 19, 21, 26, 27, 3, 6, 11, 12, 13, 15, 17, 21, 22, 23, 24, 26, 27, 29, 30, 2, 5, 6, 8, 13, 14
(list; graph; listen)
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OFFSET
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2,1
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LINKS
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T. D. Noe, Rows n=2..100 of triangle, flattened
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EXAMPLE
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Mod the 5-th prime, 11, the quadratic rseidues are 1,3,4,5,9 and the non-residues are 2,6,7,8,10.
2; 2,3; 3,5,6; 2,6,7,8,10; ...
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MAPLE
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with(numtheory): for n from 1 to 20 do for j from 1 to ithprime(n)-1 do if legendre(j, ithprime(n)) = -1 then printf(`%d, `, j) fi; od: od:
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CROSSREFS
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Cf. A063987.
Sequence in context: A000358 A032244 A166588 this_sequence A097450 A062303 A050318
Adjacent sequences: A063985 A063986 A063987 this_sequence A063989 A063990 A063991
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KEYWORD
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nonn,tabf,nice,easy
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AUTHOR
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Suggested by Gary W. Adamson, Sep 18 2001
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 25 2001
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