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Search: id:A040016
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| 2, 7, 19, 53, 139, 401, 1093, 2971, 8101, 22013, 59863, 162751, 442399, 1202603, 3269011, 8886109, 24154939, 65659969, 178482289, 485165141, 1318815713, 3584912833, 9744803443, 26489122081, 72004899319, 195729609407
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A subset of this is A050809 = primes of the form floor(e^n). Obverse of A117811 = first prime after e^n. Lim_[n approaches infinity] a(n+1)/a(n) = e. - Jonathan Vos Post (jvospost3(AT)gmail.com), May 02 2006
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LINKS
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Eric Weisstein's World of Mathematics, e-Prime.
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EXAMPLE
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a(20) = floor(e^20) - 54 = 485165195 - 54 = 485165141 as there are no primes p such that 485165141 < p < 485165195.
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CROSSREFS
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Cf. A000040, A000149, A007512, A014210, A050808, A050809, A059303, A064118, A095935, A115019, A074496, A118840.
Adjacent sequences: A040013 A040014 A040015 this_sequence A040017 A040018 A040019
Sequence in context: A018030 A051354 A073799 this_sequence A145519 A030224 A114624
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KEYWORD
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nonn
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AUTHOR
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Jud McCranie j.mccranie(AT)comcast.net
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EXTENSIONS
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Edited by N. J. A. Sloane (njas(AT)research.att.com), Dec 22 2006
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