3053952

Appears in sequences

• a(n) = 2*a(n-1) + 2*a(n-2); a(0)=0, a(1)=3.at n=15A083337
• Number of nX5 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=14A208010