A217037 - OEIS

A217037

Van der Waerden numbers w(2;5,n).

178, 206, 260

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OFFSET

5,1

COMMENTS

w(2;5,5)=178 (Stevens and Shantaram, 1978),w(2;5,6)=206 (Kouril, 2006), and w(2;5,7)=260 (Ahmed).

REFERENCES

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.

LINKS

Table of n, a(n) for n=5..7.

T. Ahmed, Some More van der Waerden Numbers

T. Ahmed, Some more Van der Waerden numbers, J. Int. Seq. 16 (2013) 13.4.4

R. Stevens and R. Shantaram, Computer-generated van der Waerden partitions, Math. Computation, 32 (1978), 635-636.

EXAMPLE

w(2;5,5)=178.

CROSSREFS

Cf. A171081, A171082.

Sequence in context: A053018 A046436 A114081 * A224600 A279093 A297400

Adjacent sequences: A217034 A217035 A217036 * A217038 A217039 A217040

KEYWORD

nonn,bref,hard,more

AUTHOR

Tanbir Ahmed, Sep 24 2012

STATUS

approved