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a(n)=number of 2's in n-th row of array T given by A049816.
1

%I #4 Mar 30 2012 18:56:59

%S 0,0,0,0,1,0,2,1,2,2,4,1,4,4,4,4,7,2,6,5,6,8,8,5,7,7,8,7,10,7,10,9,9,

%T 11,12,6,11,12,10,10,12,11,10,15,12,14,14,10,14,11,16,14,12,12,17,16,

%U 16,16,14,14,10,18,15,16,20,17,16,18,19,19

%N a(n)=number of 2's in n-th row of array T given by A049816.

%e There are 4 numbers k from 1 to 11 for which the Euclidean algorithm on (11,k) has exactly 2 nonzero remainders; hence a(11)=4.

%K nonn

%O 1,7

%A _Clark Kimberling_