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0, 1, 1, 5, 5, 5, 5, 5, 5, 23, 29, 29, 29, 119, 119, 29, 29, 29, 119, 119, 719, 209, 209, 209, 839, 839, 5039, 5039, 209, 209, 209, 839, 839, 5039, 5039, 40319, 209, 209, 209, 839, 839, 5039, 5039, 40319, 362879, 209, 209, 209, 839, 839, 5039, 5039, 40319, 362879
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,4
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LINKS
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FORMULA
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EXAMPLE
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The triangle starts in row n=1 as:
0;
1, 1;
5, 5, 5;
5, 5, 5, 23;
29, 29, 29, 119, 119;
29, 29, 29, 119, 119, 719;
209, 209, 209, 839, 839, 5039, 5039;
209, 209, 209, 839, 839, 5039, 5039, 40319;
209, 209, 209, 839, 839, 5039, 5039, 40319, 362879;
209, 209, 209, 839, 839, 5039, 5039, 40319, 362879, 3628799;
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MATHEMATICA
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A034386[n_]:= Product[Prime[i], {i, PrimePi[n]}];
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PROG
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(Sage)
def A034386(n): return product( nth_prime(j) for j in (1..prime_pi(n)) )
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Index in definition and offset corrected by Assoc. Eds. of the OEIS - Jun 15 2010
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STATUS
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approved
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