Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0100-1101-0111 pattern in any orientation.
A147053
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0100-1101-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =17a(9) =17a(10) =49a(11) =49a(12) =237a(13) =237a(14) =3143a(15) =3143a(16) =61525a(17) =61525a(18) =1581763a(19) =1581763a(20) =52804881a(21) =52804881
External references
- oeis: A147053