Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0101 pattern in any orientation.
A147219
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =17a(7) =37a(8) =107a(9) =651a(10) =4763a(11) =31885a(12) =243507a(13) =2726593a(14) =39573223a(15) =647861719a(16) =12294997893a(17) =299566536047
External references
- oeis: A147219