login
Contract every run of consecutive identical terms in A090822 to a single term.
0

%I #11 Aug 02 2014 06:17:48

%S 1,2,1,2,3,1,2,1,2,3,2,1,2,1,2,3,1,2,1,2,3,2,3,2,3,2,1,2,1,2,3,1,2,1,

%T 2,3,2,1,2,1,2,3,1,2,1,2,3,2,3,2,3,2,3,2,1,2,1,2,3,1,2,1,2,3,2,1,2,1,

%U 2,3,1,2,1,2,3,2,3,2,3,2,1,2,1,2,3,1,2,1,2,3,2,1,2,1,2,3,1,2,1

%N Contract every run of consecutive identical terms in A090822 to a single term.

%H F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL10/Sloane/sloane55.html">A Slow-Growing Sequence Defined by an Unusual Recurrence</a>, J. Integer Sequences, Vol. 10 (2007), #07.1.2.

%H F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence [<a href="http://neilsloane.com/doc/gijs.pdf">pdf</a>, <a href="http://neilsloane.com/doc/gijs.ps">ps</a>].

%H <a href="/index/Ge#Gijswijt">Index entries for sequences related to Gijswijt's sequence</a>

%e A090822 begins 1,1,2,1,1,2,2,2,3,1,1,2,1,1,2,2,2,3,2,... which contracts to 1,2,1,2,3,1,2,1,2,3,2,...

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Jun 18 2004