1468008

Appears in sequences

• a(1)=3, a(2)=4, a(n) = 3*a(n-1) + 4*a(n-2).at n=10A189738
• Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00001011 00010101 or 01010101.at n=7A261379