Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.
A297649
Number of nX3 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.
Terms
- a(0) =4a(1) =43a(2) =231a(3) =1421a(4) =9033a(5) =55706a(6) =346032a(7) =2151932a(8) =13364992a(9) =83036263a(10) =515911384a(11) =3205231551a(12) =19913717003a(13) =123721335945a(14) =768662962676
External references
- oeis: A297649