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Exactly half the first a(n) terms of A022303 are 1's.
1

%I #3 Mar 30 2012 18:55:50

%S 2,4,6,10,12,14,16,18,20,22,24,26,32,34,36,38,40,42,44,46,50,52,54,56,

%T 58,60,64,66,68,70,72,74,76,78,82,84,94,100,102,112,114,118,120,122,

%U 124,126,128,132,134,136,138,140,142,144,146,148,154,156,158

%N Exactly half the first a(n) terms of A022303 are 1's.

%K nonn

%O 0,1

%A _Clark Kimberling_