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A073189
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Integers 0..k three times, then 0..k+1 three times, etc.
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17
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0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,12
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LINKS
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EXAMPLE
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0;
0;
0;
0, 1;
0, 1;
0, 1;
0, 1, 2;
0, 1, 2;
0, 1, 2;
0, 1, 2, 3;
0, 1, 2, 3; ...
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MATHEMATICA
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PROG
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(PARI) a(n)=local(m); m=floor(sqrt(6*n+6)-3/2)\3+1; (n-3*binomial(m, 2))%m
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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