A217007 Van der Waerden numbers w(j+2; t_0,t_1,...,t_{j-1}, 4, 4) with t_0 = t_1 = ... = t_{j-1} = 2.

35, 40, 53, 54, 56, 66, 67

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..6.

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

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

Example

w(2;4,4)=35, w(3;2,4,4)=40, w(4:2,2,4,4)=53, and so on...

Crossrefs

Cf. A217005, A217008, A217058, A217059, A217060, A217236, A217237.

Sequence in context: A249429 A249423 A219799 * A141741 A122755 A298156

Adjacent sequences: A217004 A217005 A217006 * A217008 A217009 A217010

Keyword

nonn,more,hard

Author

Tanbir Ahmed, Sep 23 2012

Status

approved