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1, 2, 6, 34, 250, 972, 15498, 109544, 5961306, 54891535, 2488870076, 246264587430, 118503860254, 16917328320424, 31020551370600, 459016311081816, 25084010473396186126, 22789919291848918932, 3423598216929042597, 82480361346228654485320, 12440086312584102532500, 121292379506812780007192
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refs;
listen;
history;
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internal format)
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OFFSET
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0,2
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COMMENTS
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Sequence A002685 has only 10 terms (from n = 1 to n = 10). We have a(n) = A002685(n) for 1 <= n <= 10 except for n = 7: a(7) = 109544 while A002685(7) = 766808 (which is a(7) * 7 = 109544 * 7). For an explanation, see the comments for array A324124. This is necessary to give a unique definition to the terms of array A324124.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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