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Search: id:A054850
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| A054850 |
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a(n)=m such that 2^m <= p(n)# <= 2^(m+1), where p(n)# is primorial of the n-th prime (A002110). |
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5
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| 1, 2, 4, 7, 11, 14, 18, 23, 27, 32, 37, 42, 48, 53, 59, 64, 70, 76, 82, 88, 95, 101, 107, 114, 120, 127, 134, 140, 147, 154, 161, 168, 175, 182, 189, 197, 204, 211, 219, 226, 234, 241, 249, 256, 264, 272, 279, 287, 295, 303, 311, 318, 326, 334, 342, 350, 358, 367
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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A measure of the growth rate of the primorials.
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MATHEMATICA
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Table[ Floor[ Log[2, Product[ Prime[i], {i, 1, n}]]], {n, 1, 60}]
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CROSSREFS
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Cf. A002110, A058033.
Equals A045716(n)-1.
Sequence in context: A086795 A064690 A138766 this_sequence A027427 A018385 A087163
Adjacent sequences: A054847 A054848 A054849 this_sequence A054851 A054852 A054853
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KEYWORD
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nonn
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), May 22 2003
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EXTENSIONS
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Edited, corrected and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), May 22 2003
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