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A180812 Number of distinct solutions of sum{i=1..10}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1 1
0, 30, 1001, 22696, 392250, 4972016, 49761505, 397307654, 2659084116, 15109820870, 75357373680, 332792786617, 1331562266837, 4853931902522, 16394137405008, 51451948421640, 152009675134746, 423289393214764 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 10 of A180813

LINKS

R. H. Hardin, Table of n, a(n) for n=1..183

CROSSREFS

Sequence in context: A273626 A280958 A061466 * A292002 A160313 A001821

Adjacent sequences: A180809 A180810 A180811 * A180813 A180814 A180815

KEYWORD

nonn

AUTHOR

R. H. Hardin, suggested by Max Alekseyev in the Sequence Fans Mailing List, Sep 20 2010

STATUS

approved

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Last modified January 29 11:47 EST 2023. Contains 359922 sequences. (Running on oeis4.)