Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 10101-11111 pattern in any orientation.
A147425
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 10101-11111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =3a(9) =5a(10) =9a(11) =15a(12) =25a(13) =39a(14) =112a(15) =309a(16) =909a(17) =2627a(18) =8069a(19) =23067a(20) =88292a(21) =336847a(22) =1557719a(23) =7093487a(24) =36776203
External references
- oeis: A147425