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单词 B2-Sequence
释义

B2-Sequence

N.B. A detailed on-line essay by S. Finchwas the starting point for this entry.


Also called a Sidon Sequence. An Infinite Sequence of Positive Integers

(1)

such that all pairwise sums
(2)

for are distinct (Guy 1994). An example is 1, 2, 4, 8, 13, 21, 31, 45, 66, 81, ... (Sloane's A005282).


Zhang (1993, 1994) showed that

(3)

The definition can be extended to -sequences (Guy 1994).

See also A-Sequence, Mian-Chowla Sequence


References

Finch, S. ``Favorite Mathematical Constants.'' http://www.mathsoft.com/asolve/constant/erdos/erdos.html

Guy, R. K. ``Packing Sums of Pairs,'' ``Three-Subsets with Distinct Sums,'' and ``-Sequences,'' and -Sequences Formed by the Greedy Algorithm.'' §C9, C11, E28, and E32 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, pp. 115-118, 121-123, 228-229, and 232-233, 1994.

Sloane, N. J. A. SequenceA005282/M1094in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.

Zhang, Z. X. ``A B2-Sequence with Larger Reciprocal Sum.'' Math. Comput. 60, 835-839, 1993.

Zhang, Z. X. ``Finding Finite B2-Sequences with Larger .'' Math. Comput. 63, 403-414, 1994.


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