| 1, 2, 4, 6, 9, 12, 15, 18, 21, 24, 28, 32, 36, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 96, 102, 108, 114, 120, 126, 133, 140, 147, 154, 161, 168, 176, 184, 192, 200, 208, 216, 225, 234, 243, 252, 261, 270, 280, 290, 300, 310, 320, 330, 341, 352, 363, 374, 385
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 163-166.
E. Levine and J. O'Sullivan, An upper estimate for the reciprocal sum of a sum-free sequence, Acta Arithmetica, 34 (1977), 9-24.
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LINKS
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S. R. Finch, A convex maximization problem: Discrete case
S. R. Finch, A Convex Maximization Problem
S. R. Finch, Erdos's Reciprocal Sum Constants
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
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Cf. A051741, A051742.
Sequence in context: A030763 A143145 A130664 this_sequence A064424 A067850 A130240
Adjacent sequences: A014008 A014009 A014010 this_sequence A014012 A014013 A014014
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KEYWORD
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nonn,nice
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AUTHOR
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Simon Plouffe (simon.plouffe(AT)gmail.com)
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EXTENSIONS
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More terms from S. R. Finch (Steven.Finch(AT)inria.fr), Dec 07 1999
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