Half the number of (n+2)X4 binary arrays with no 3X3 subblock having a sum equal to any horizontal or vertical neighbor 3X3 subblock sum.
A187957
Half the number of (n+2)X4 binary arrays with no 3X3 subblock having a sum equal to any horizontal or vertical neighbor 3X3 subblock sum.
Terms
- a(0) =1408a(1) =8768a(2) =53728a(3) =322128a(4) =2092928a(5) =13520976a(6) =86157696a(7) =548059536a(8) =3471855360a(9) =21859425872a(10) =139526151616a(11) =888660941136
External references
- oeis: A187957