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
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
B. Landman, A. Robertson, and C. Culver, Some new exact van der Waerden numbers, Integers, 5(2) (2005), A10.
EXAMPLE
w(3;3,3,3)=27, w(4;2,3,3,3)=40, w(5;2,2,3,3,3)=41, and so on...
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Tanbir Ahmed, Sep 23 2012
EXTENSIONS
a(6)=52 added by Tanbir Ahmed, Dec 07 2012
STATUS
approved