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1, 0, 1, 0, -1, 1, 0, 0, -1, 1, 0, -1, -1, -1, 1, 0, 0, 0, -1, -1, 1, 0, -1, -1, -1, -1, -1, 1, 0, 0, -1, 0, -1, -1, -1, 1, 0, -1, 0, -1, -1, -1, -1, -1, 1, 0, 0, -1, -1, 0, -1, -1, -1, -1, 1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 0, 0, 0, 0, -1, 0, -1, -1, -1, -1, -1, 1, 0, -1, -1, -1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..82.
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EXAMPLE
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Table begins:
1,
0,1,
0,-1,1,
0,0,-1,1,
0,-1,-1,-1,1,
0,0,0,-1,-1,1,
0,-1,-1,-1,-1,-1,1,
0,0,-1,0,-1,-1,-1,1,
0,-1,0,-1,-1,-1,-1,-1,1,
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MAPLE
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(Excel) =if(row()>=column(); if(row()=column(); 1; if(mod(row(); column()); -1; 0)); 0)
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CROSSREFS
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Sequence in context: A087748 A117446 A101688 * A155029 A134540 A128430
Adjacent sequences: A155028 A155029 A155030 * A155032 A155033 A155034
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KEYWORD
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sign,tabl
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AUTHOR
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Mats Granvik, Jan 19 2009
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STATUS
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approved
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