Number of n X n symmetric binary matrices with each 1 adjacent to exactly 1 knight-move neighboring 1.
A191294
Number of n X n symmetric binary matrices with each 1 adjacent to exactly 1 knight-move neighboring 1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =21a(5) =122a(6) =880a(7) =6953a(8) =72647a(9) =1129137a(10) =24364420a(11) =694152879a(12) =24831611879
External references
- oeis: A191294