Number of 7Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.
A297304
Number of 7Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.
Terms
- a(0) =1a(1) =1a(2) =21a(3) =69a(4) =266a(5) =1574a(6) =13504a(7) =93906a(8) =551477a(9) =3159693a(10) =18792129a(11) =113862870a(12) =692747205a(13) =4226551294a(14) =25828653795a(15) =157805371000a(16) =963306137176
External references
- oeis: A297304