Number of nX2 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.
A231657
Number of nX2 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.
Terms
- a(0) =3a(1) =15a(2) =93a(3) =458a(4) =2163a(5) =10789a(6) =53813a(7) =265397a(8) =1311447a(9) =6493700a(10) =32130833a(11) =158937397a(12) =786355013a(13) =3890673454a(14) =19249161646a(15) =95235762295a(16) =471186213619
External references
- oeis: A231657