Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0100-1100-0111 pattern in any orientation.
A146582
Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0100-1100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =5a(8) =15a(9) =25a(10) =79a(11) =181a(12) =847a(13) =2349a(14) =14983a(15) =51353a(16) =387131a(17) =1677003a(18) =16440369a(19) =89397803a(20) =1133198975a(21) =7724492549a(22) =124149724539
External references
- oeis: A146582