Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0110 pattern in any orientation.
A146669
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0110 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =21a(7) =49a(8) =219a(9) =1317a(10) =9715a(11) =80153a(12) =817961a(13) =10735885a(14) =177805125a(15) =3599071193a(16) =90866799531
External references
- oeis: A146669