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A369243
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a(n) is the least integer k whose arithmetic derivative is equal to the n-th partial sum of primorials, and 0 if no such k exists.
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3
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2, 0, 14, 45, 198, 5114, 65174, 1086194, 20485574, 465779078, 0, 293420849770, 318745032938881
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OFFSET
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0,1
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COMMENTS
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a(n) = the smallest integer k for which A003415(k) = A143293(n), and 0 if no such k exists.
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LINKS
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FORMULA
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EXAMPLE
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a(0) = 2 as the least number k such that A003415(k) = A143293(0) = 1 is 2.
a(1) = 0 as there is no number k such that A003415(k) = A143293(1) = 3.
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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