Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11011-01110-00100 pattern in any orientation.
A147483
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11011-01110-00100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =6a(7) =1a(8) =15a(9) =1a(10) =83a(11) =13a(12) =668a(13) =49a(14) =6957a(15) =332a(16) =94212a(17) =3073a(18) =1778981a(19) =36531a(20) =47461296a(21) =597879a(22) =1754228305a(23) =14127501a(24) =89063295956a(25) =454449581
External references
- oeis: A147483