%I A088570
%S A088570 1,4,2,2,1,4,1,4,2,2,2,4,1,2,2,2,1,4,2,2,2,2,1,4,1,4,2,2,1,4,1,2,2,2,2,
%T A088570 4,1,4,2,2,1,4,1,4,2,2,2,2,1,4,1,2,2,4,1,4,2,2,1,4,1,4,2,2,2,4,1,2,2,2,
%U A088570 1,4,1,4,2,2,2,2,1,4,2,2,2,4,1,2,2,2,2,4,1,4,2,2,1,4,1,2,2,4,1,4,1,2,2
%N A088570 Sum of terms in n-th bloc of Kolakoski sequence.
%F A088570 a(n)=(3+(-1)^n)/2*A000002(n)
%Y A088570 Sequence in context: A004551 A016511 A123402 this_sequence A102888 A071558 
               A136709
%Y A088570 Adjacent sequences: A088567 A088568 A088569 this_sequence A088571 A088572 
               A088573
%K A088570 nonn
%O A088570 1,2
%A A088570 Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 17 2003