Number of n X n binary matrices containing no more than two 1s in any 3 X 3 sub-block.
A140305
Number of n X n binary matrices containing no more than two 1s in any 3 X 3 sub-block.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =46a(4) =824a(5) =27178a(6) =1020762a(7) =102044420a(8) =20297233254
External references
- oeis: A140305