login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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. 7

%I #30 Nov 30 2017 16:19:11

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

%N 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.

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

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

%H T. Ahmed, <a href="http://www.emis.de/journals/INTEGERS/papers/j6/j6.Abstract.html">Some new van der Waerden numbers and some van der Waerden-type numbers</a>, Integers, 9 (2009), A06, 65-76.

%H T. Ahmed, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL16/Ahmed/ahmed2.html">Some more Van der Waerden numbers</a>, J. Int. Seq. 16 (2013) 13.4.4

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

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

%K nonn,more,hard

%O 0,1

%A _Tanbir Ahmed_, Sep 23 2012

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)