A180834 T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 2..n-2

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 0, 0, 0, 5, 5, 8, 2, 0, 0, 0, 0, 3, 13, 30, 8, 2, 0, 0, 0, 0, 7, 29, 103, 69, 25, 1, 0, 0, 0, 0, 4, 55, 286, 302, 197, 27, 4, 0, 0, 0, 0, 9, 98, 715, 1252, 1182, 311, 58, 2, 0, 0, 0, 0, 15, 166, 1634, 4260, 5910

Offset

1,26

Comments

Table starts

.0..0...0....0.....0......0......0.......0.......0........0.........0.........0

.0..0...0....0.....0......0......0.......0.......0........0.........0.........0

.0..0...0....0.....0......0......0.......0.......0........0.........0.........0

.0..0...0....0.....0......0......0.......0.......0........0.........0.........0

.1..0...2....5.....3......7......4.......9......15.......11........18........13

.0..2...5...13....29.....55.....98.....166.....263......403.......598.......858

.2..8..30..103...286....715...1634....3474....6946....13194.....23996.....41990

.2..8..69..302..1252...4260..13191...36866...95702...232088....532283...1161066

.2.25.197.1182..5910..25603..98721..345458.1113010..3338772...9408830..25089484

.1.27.311.2676.18058.102717.509796.2263066.9143911.34074527.118319465.385994234

Links

R. H. Hardin, Table of n, a(n) for n=1..2016

Crossrefs

Sequence in context: A204267 A237452 A132784 * A214458 A133873 A163326

Adjacent sequences: A180831 A180832 A180833 * A180835 A180836 A180837

Keyword

nonn,tabl

Author

R. H. Hardin Sep 20 2010

Status

approved