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A053793 n^2+n modulo 7. +0
3
0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0, 0, 2, 6, 5, 6, 2, 0 (list; graph; listen)
OFFSET

1,2

COMMENT

Pronic residues (mod m) are analogous to quadratic residues.

CROSSREFS

Sequence in context: A021381 A105029 A067548 this_sequence A076187 A019655 A032582

Adjacent sequences: A053790 A053791 A053792 this_sequence A053794 A053795 A053796

KEYWORD

nonn,easy

AUTHOR

Stuart M. Ellerstein (ellerstein(AT)aol.com), Mar 27 2000

EXTENSIONS

More terms from James A. Sellers (sellersj(AT)math.psu.edu), Apr 08 2000

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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