%I

%S 1,2,2,4,4,4,4,8,16,16,16,16,16,16,32,64,64,128,256,256,256,256,512,

%T 512,1024,1024,1024,1024,2048,4096,4096,8192,8192,8192,8192,16384,

%U 16384,32768,65536,65536,65536,65536,131072,131072,131072,262144,262144

%N a(n)=Product{k=0..n, 1+0^A101650(k)}/2.

%K easy,nonn

%O 0,2

%A _Paul Barry_, Dec 10 2004