A180812 Number of distinct solutions of sum{i=1..10}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1

0, 30, 1001, 22696, 392250, 4972016, 49761505, 397307654, 2659084116, 15109820870, 75357373680, 332792786617, 1331562266837, 4853931902522, 16394137405008, 51451948421640, 152009675134746, 423289393214764

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