Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1110-0111-0100 pattern in any orientation.
A146737
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1110-0111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =17a(6) =53a(7) =309a(8) =1493a(9) =7269a(10) =60637a(11) =750031a(12) =8947313a(13) =159252711a(14) =3162713321a(15) =81850156841
External references
- oeis: A146737