

A217059


Van der Waerden numbers w(j+2; t_0,t_1,...,t_{j1}, 3, 5) with t_0 = t_1 = ... = t_{j1} = 2.


7




OFFSET

0,1


REFERENCES

T. C. Brown, Some new van der Waerden numbers (preliminary report), Notices American Math. Society, 21 (1974), A432.
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..8.
T. Ahmed, Some new van der Waerden numbers and some van der Waerdentype numbers, Integers, 9 (2009), A06, 6576.
T. Ahmed, On computation of exact van der Waerden numbers, Integers: Electronic Journal of Combinatorial Number Theory, 11 (2011), A71.
T. Ahmed, Some more Van der Waerden numbers, J. Int. Seq. 16 (2013) 13.4.4


EXAMPLE

w(2;3,5)=22, w(3;2,3,5)=32, w(4;2,2,3,5)=43, and so on...


CROSSREFS

Cf. A217005, A217007, A217008, A217058, A217060, A217236, A217237.
Sequence in context: A106555 A106557 A142347 * A121019 A167337 A216798
Adjacent sequences: A217056 A217057 A217058 * A217060 A217061 A217062


KEYWORD

nonn,more,hard


AUTHOR

Tanbir Ahmed, Sep 25 2012


EXTENSIONS

a(8) = 70 from Tanbir Ahmed, Mar 11 2013


STATUS

approved



