Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01000-11111-00010 pattern in any orientation.
A147016
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01000-11111-00010 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) =1a(11) =1a(12) =1a(13) =1a(14) =5a(15) =5a(16) =13a(17) =13a(18) =31a(19) =31a(20) =111a(21) =111a(22) =377a(23) =377a(24) =1545a(25) =1545a(26) =10231a(27) =10231
External references
- oeis: A147016