Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 101-111-101 pattern in any orientation.
A146430
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 101-111-101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =7a(5) =1a(6) =37a(7) =25a(8) =437a(9) =223a(10) =16431a(11) =2029a(12) =527367a(13) =30275a(14) =25330876a(15) =3302117a(16) =3127296780a(17) =405040667a(18) =935559062214a(19) =47290059763
External references
- oeis: A146430