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A060037
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Triangular array T read by rows: T(n,k)=k^2 mod n, for k=1,2,...,[n/2], n=2,3,...
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3
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1, 1, 1, 0, 1, 4, 1, 4, 3, 1, 4, 2, 1, 4, 1, 0, 1, 4, 0, 7, 1, 4, 9, 6, 5, 1, 4, 9, 5, 3, 1, 4, 9, 4, 1, 0, 1, 4, 9, 3, 12, 10, 1, 4, 9, 2, 11, 8, 7, 1, 4, 9, 1, 10, 6, 4, 1, 4, 9, 0, 9, 4, 1, 0, 1, 4, 9, 16, 8, 2, 15, 13, 1, 4, 9, 16, 7, 0, 13, 10, 9, 1, 4, 9, 16, 6, 17, 11, 7, 5, 1, 4, 9, 16, 5, 16
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refs;
listen;
history;
text;
internal format)
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OFFSET
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2,6
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LINKS
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EXAMPLE
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1; 1; 1,0; 1,4; 1,4,3; 1,4,2; ...
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MATHEMATICA
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Flatten[Table[PowerMod[k, 2, n], {n, 2, 20}, {k, Floor[n/2]}]] (* Harvey P. Dale, Mar 05 2012 *)
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CROSSREFS
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KEYWORD
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nonn,tabf,easy,nice
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AUTHOR
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), Mar 20 2001
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STATUS
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approved
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