Number of (n+1) X 9 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.

A186461

Number of (n+1) X 9 binary arrays with every 2 X 2 subblock commuting with each of its horizontal and vertical 2 X 2 subblock neighbors.

Terms

    a(0) =359a(1) =457a(2) =846a(3) =1493a(4) =2285a(5) =3677a(6) =5633a(7) =9477a(8) =13245a(9) =20281a(10) =27573a(11) =43177a(12) =62025a(13) =98157a(14) =144825a(15) =224381a(16) =333321a(17) =511281a(18) =765293a(19) =1167881a(20) =1755461a(21) =2669577a(22) =4022697a(23) =6104941a(24) =9213769a(25) =13965837a(26) =21097609a(27) =31954865a(28) =48300653a(29) =73123993

External references