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A181615
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Triangle read by rows: R(n,k)=2^(n-1) mod semiprime(k).
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2
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1, 2, 2, 0, 4, 4, 0, 2, 8, 8, 0, 4, 7, 6, 2, 0, 2, 5, 2, 4, 2, 0, 4, 1, 4, 8, 4, 1, 0, 2, 2, 8, 2, 8, 2, 18, 0, 4, 4, 6, 4, 1, 4, 14, 6, 0, 2, 8, 2, 8, 2, 8, 6, 12, 18, 0, 4, 7, 4, 2, 4, 16, 12, 24, 10, 1, 0, 2, 5, 8, 4, 8, 11, 2, 23, 20, 2, 8, 0, 4, 1, 6, 8, 1, 1, 4, 21, 14, 4
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table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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EXAMPLE
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Triangle begins
1;
2, 2;
0, 4, 4;
0, 2, 8, 8;
0, 4, 7, 6, 2;
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PROG
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(PARI) trg(nn) = {semip = select(n->bigomega(n) == 2, vector(nn, i, i)); for (n = 1, #semip, for (k = 1, n, print1(2^(n-1) % semip[k], ", "); ); print(); ); } \\ Michel Marcus, Sep 11 2013
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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