Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10000-11111-00001 pattern in any orientation.
A147069
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10000-11111-00001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =13a(11) =13a(12) =65a(13) =65a(14) =297a(15) =297a(16) =2247a(17) =2247a(18) =24427a(19) =24427a(20) =296303a(21) =296303a(22) =6915839a(23) =6915839a(24) =203810183a(25) =203810183
External references
- oeis: A147069