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 A180782 T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1 11

%I

%S 0,0,0,0,1,0,0,0,2,1,0,1,5,6,0,0,0,3,14,13,2,0,1,7,34,42,23,0,0,0,12,

%T 62,145,119,36,3,0,1,9,118,402,522,253,62,3,0,0,15,198,995,1960,1518,

%U 526,78,4,0,1,22,327,2294,6518,7587,4041,944,123,0,0,0,18,499,4856,19467,32893

%N T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1

%C Table starts

%C .0...0....0.....0......0.......0........0........0.........0..........0

%C .0...1....0.....1......0.......1........0........1.........0..........1

%C .0...2....5.....3......7......12........9.......15........22.........18

%C .1...6...14....34.....62.....118......198......327.......499........756

%C .0..13...42...145....402.....995.....2294.....4856......9730......18478

%C .2..23..119...522...1960....6518....19467....53455....136491.....327338

%C .0..36..253..1518...7587...32893...126864...444003...1430727....4292145

%C .3..62..526..4041..25470..139369...674922..2948305..11783122...43576141

%C .3..78..944..9150..73146..499659..2997717.16112289..78770456..354466005

%C .4.123.1702.19970.193036.1599064.11615754.75389116.443607864.2394458182

%H R. H. Hardin, <a href="/A180782/b180782.txt">Table of n, a(n) for n=1..2016</a>

%K nonn,tabl

%O 1,9

%A _R. H. Hardin_ Sep 20 2010

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Last modified June 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)