Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only either three adjacent vertically or three adjacent horizontally.
A145758
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only either three adjacent vertically or three adjacent horizontally.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =3a(4) =46a(5) =11a(6) =1486a(7) =401a(8) =133777a(9) =19881a(10) =31874678a(11) =3357350a(12) =19385116046a(13) =1369262857
External references
- oeis: A145758