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a(n)=number of 4's in n-th row of array T given by A049816.
0

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

%S 0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,2,2,0,1,0,2,0,3,3,2,2,3,1,4,2,4,2,

%T 2,4,6,4,6,3,7,3,10,2,5,6,6,5,6,7,6,7,13,8,6,5,9,10,14,3,19,10,11,8,8,

%U 7,14,8,10,9

%N a(n)=number of 4's in n-th row of array T given by A049816.

%K nonn

%O 1,18

%A _Clark Kimberling_