Number of n X n symmetric binary matrices with each 1 adjacent to no more than 3 knight-move neighboring 1s.
A191571
Number of n X n symmetric binary matrices with each 1 adjacent to no more than 3 knight-move neighboring 1s.
Terms
- a(0) =2a(1) =8a(2) =64a(3) =775a(4) =12956a(5) =435303a(6) =27256988a(7) =2944205484a(8) =528310229714
External references
- oeis: A191571