A217236 - OEIS

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A217236

Van der Waerden numbers w(j+2; t_0,t_1,...,t_{j-1}, 4, 5) with t_0 = t_1 = ... = t_{j-1} = 2.

55, 71, 75, 79

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OFFSET

0,1

REFERENCES

T. C. Brown, Some new van der Waerden numbers (preliminary report), Notices American Math. Society, 21 (1974), A-432.

V. Chvatal, Some unknown van der Waerden numbers, Combinatorial Structures and their Applications (R. Guy et al., eds.), Gordon and Breach, New York, 1970.

LINKS

Table of n, a(n) for n=0..3.

T. Ahmed, Some new van der Waerden numbers and some van der Waerden-type numbers, Integers, 9 (2009), A06, 65-76.

EXAMPLE

w(2;4,5)=55, w(3; 2, 4, 5)=71, and so on...

CROSSREFS

Cf. A217005, A217007, A217008, A217058, A217059, A217060, A217237.

Sequence in context: A068898 A068899 A053719 * A050781 A060260 A152080

Adjacent sequences: A217233 A217234 A217235 * A217237 A217238 A217239

KEYWORD

nonn,hard,more

AUTHOR

Tanbir Ahmed, Sep 28 2012

STATUS

approved