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A049399
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A generalized difference set on the set of all integers.
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1
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1, 2, 6, 7, 16, 18, 38, 40, 82, 85, 172, 175, 350, 354, 710, 716
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OFFSET
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0,2
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COMMENTS
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In the set of all positive differences of the sequence each integer appears exactly twice, i.e. lambda = 2.
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REFERENCES
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O. Grosek, R. Jajcay, Generalized Difference Sets on an Infinite Cyclic Semigroup, JCMCC, Vol. 13 (1993), pp. 167-174.
T.Baginova, R. Jajcay, Notes on subtractive properties of natural numbers, Bulletin of the ICA, Vol. 25(1999), pp. 29-40
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LINKS
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Table of n, a(n) for n=0..15.
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CROSSREFS
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Cf. A024431.
Sequence in context: A078113 A030607 A177353 * A060133 A107784 A210619
Adjacent sequences: A049396 A049397 A049398 * A049400 A049401 A049402
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KEYWORD
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nonn,more,easy
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AUTHOR
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Otokar Grosek (grosek(AT)elf.stuba.sk)
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STATUS
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approved
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