Number of (n+2)X8 0..3 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

A186878

Number of (n+2)X8 0..3 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

Terms

    a(0) =186096a(1) =18517a(2) =32992a(3) =108640a(4) =230224a(5) =287368a(6) =338176a(7) =414184a(8) =568744a(9) =927136a(10) =1492600a(11) =2387392a(12) =4046104a(13) =6975931a(14) =11357422a(15) =19105849a(16) =32364013a(17) =52661545a(18) =88036021a(19) =148729189a(20) =243684934a(21) =407116792a(22) =686279218a(23) =1129121971a(24) =1883516491

External references