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a(n) = length of n-th run of identical symbols in A026498.
1

%I #9 Oct 03 2019 21:12:58

%S 3,1,7,1,1,3,3,1,8,1,6,1,7,1,1,3,3,1,1,7,1,3,3,1,7,1,1,3,3,1,8,1,6,1,

%T 8,1,3,3,1,1,7,1,6,1,7,1,1,3,3,1,8,1,6,1,7,1,1,3,3,1,1,7,1,3,3,1,7,1,

%U 1,3,3,1,1,7,1,6,1,8,1,3,3,1,1,7,1,3,3,1,7,1,1,3,3,1,8

%N a(n) = length of n-th run of identical symbols in A026498.

%H Michael De Vlieger, <a href="/A026499/b026499.txt">Table of n, a(n) for n = 1..10000</a>

%t Length /@ Split@ Array[1 + Mod[DigitCount[3 # + 1, 2, 1], 2] &, 300, 0] (* _Michael De Vlieger_, Oct 03 2019 *)

%K nonn

%O 1,1

%A _Clark Kimberling_

%E Corrected and extended by _Sean A. Irvine_, Oct 03 2019