Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.
A147200
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =13a(7) =45a(8) =141a(9) =593a(10) =2479a(11) =13149a(12) =73679a(13) =588757a(14) =5000629a(15) =56709831a(16) =657094563
External references
- oeis: A147200