Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1's.
A296549
Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1's.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =11a(5) =32a(6) =148a(7) =960a(8) =6802a(9) =58510a(10) =718772a(11) =11693848a(12) =239151220a(13) =6062327040a(14) =203215388485
External references
- oeis: A296549