Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.
A297690
Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.
Terms
- a(0) =8a(1) =60a(2) =293a(3) =1774a(4) =10647a(5) =61054a(6) =358972a(7) =2106480a(8) =12300234a(9) =72038048a(10) =421753983a(11) =2467894885a(12) =14445993705a(13) =84556016585a(14) =494899782183
External references
- oeis: A297690