This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A217005 #37 Nov 30 2017 16:18:47
%S A217005 9,14,17,20,21,24,25,28,31,33,35,37,39,42,44,46,48,50,51
%N A217005 Van der Waerden numbers w(j+2; t_0,t_1,...,t_{j-1}, 3, 3) with t_0 = t_1 = ... = t_{j-1} = 2.
%D A217005 T. C. Brown, Some new van der Waerden numbers (preliminary report), Notices American Math. Society, 21 (1974), A-432.
%D A217005 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 A217005 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 A217005 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
%H A217005 B. Landman, A. Robertson, and C. Culver, <a href="http://www.emis.de/journals/INTEGERS/papers/a10int2003/a10int2003.Abstract.html">Some new exact van der Waerden numbers</a>, Integers, 5(2) (2005), A10.
%e A217005 w(2;3,3)=9, w(3;2,3,3)=14, w(4;2,2,3,3)=17, and so on...
%Y A217005 Cf. A171081, A217007, A217008, A217058, A217059, A217060, A217236, A217237.
%K A217005 nonn,more,hard
%O A217005 0,1
%A A217005 _Tanbir Ahmed_, Sep 22 2012
%E A217005 a(17)=50 and a(18)=51 added by _Tanbir Ahmed_, Dec 07 2012