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A143044
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A nonsense sequence.
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0
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1, 1, -3, 0, 0, 4, 6, 5, 18, -23, -24, 24, 17, 88, -7, 145, 5, -376, 376, -236, 654, -755, 34, 3025, -2992, 2992, -5983, -720, -11279, -18015, 48141, -112, 112, -66268, -95338, -85227, -294862, 389049, 381240, -381240, -302671, -1445240, 69609, -2448591, 110613, 6162200, -6162200, 3602996
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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MATHEMATICA
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m0 = Inverse[{{0, I}, {I, 1}}];
M[0] = {{0, -1}, {-1, -1}}.m0;
M[1] = {{1, 0}, {-1, -1}}.m0;
M[2] = {{-1, 0}, {-1, -1}}.m0;
M[3] = {{0, 1}, {-1, -1}}.m0;
M[4] = I*{{0, -1}, {-1, -1}}.m0;
M[5] = I*{{1, 0}, {-1, -1}}.m0;
M[6] = I*{{-1, 0}, {-1, -1}}.m0;
M[7] = I*{{0, 1}, {-1, -1}}.m0;
v[0] = {1, 1};
v[n_] := v[n] = M[Mod[n, 7]].v[n - 1];
ar = Table[Re[v[n][[1]]], {n, 0, 50}]
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CROSSREFS
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KEYWORD
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uned,obsc,less,sign
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AUTHOR
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STATUS
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approved
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