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Search: id:A007281
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| A007281 |
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Number of `(n,2)'-sequences of length 2n.
(Formerly M0605)
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+0
2
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| 1, 1, 2, 2, 5, 4, 8, 6, 1, 0, 1, 0, 0
(list; graph; listen)
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OFFSET
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1,3
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REFERENCES
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H.-Y. Song and S. W. Golomb, Generalized Welch-Costas sequences and their application to Vatican arrays, in Proc. 2nd International Conference on Finite Fields: Theory, Algorithms, and Applications (Las Vegas 1993) Contemp. Math. vol. 168 348 1994.
Hong-Yeop Song and J. Bok Lee, "On (n,k)-sequences", Discrete Appl. Math. 105 (2000), no. 1-3, 183-192.
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CROSSREFS
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Sequence in context: A098366 A000019 A081177 this_sequence A101085 A088880 A008818
Adjacent sequences: A007278 A007279 A007280 this_sequence A007282 A007283 A007284
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KEYWORD
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nonn,hard
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AUTHOR
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Hong-Yeop Song (hy.song(AT)coding.yonsei.ac.kr)
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