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A217037
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Van der Waerden numbers w(2;5,n).
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1
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OFFSET
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5,1
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COMMENTS
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w(2;5,5)=178 (Stevens and Shantaram, 1978),w(2;5,6)=206 (Kouril, 2006), and w(2;5,7)=260 (Ahmed).
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REFERENCES
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M. Kouril, A Backtracking Framework for Beowulf Clusters with an Extension to Multi-Cluster Computation and Sat Benchmark Problem Implementation, Ph. D. Thesis, University of Cincinnati, Engineering: Computer Science and Engineering, 2006.
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LINKS
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Table of n, a(n) for n=5..7.
T. Ahmed, Some More van der Waerden Numbers
R. Stevens and R. Shantaram, Computer-generated van der Waerden partitions, Math. Computation, 32 (1978), 635-636.
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EXAMPLE
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w(2;5,5)=178.
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CROSSREFS
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Cf. A171081, A171082.
Sequence in context: A053018 A046436 A114081 * A224600 A279093 A189440
Adjacent sequences: A217034 A217035 A217036 * A217038 A217039 A217040
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KEYWORD
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nonn,bref,hard,more
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AUTHOR
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Tanbir Ahmed, Sep 24 2012
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STATUS
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approved
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