login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217060 Van der Waerden numbers w(j+2; t_0,t_1,...,t_{j-1}, 3, 6) with t_0 = t_1 = ... = t_{j-1} = 2. 7
32, 40, 48, 56, 60, 65, 71 (list; graph; refs; listen; history; text; internal format)
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

B. Landman, A. Robertson, and C. Culver, Some new exact van der Waerden numbers, Integers, 5(2) (2005), A10.

CROSSREFS

Cf. A217005, A217007, A217008, A217058, A217059, A217236, A217237.

Sequence in context: A070624 A178099 A039778 * A240246 A167309 A159007

Adjacent sequences:  A217057 A217058 A217059 * A217061 A217062 A217063

KEYWORD

nonn,more,hard

AUTHOR

Tanbir Ahmed, Sep 25 2012

EXTENSIONS

a(6)=71 added by Tanbir Ahmed, Dec 07 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 27 00:38 EDT 2018. Contains 304689 sequences. (Running on oeis4.)