Number of n X 4 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.
A228279
Number of n X 4 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.
Terms
- a(0) =3a(1) =6a(2) =35a(3) =133a(4) =587a(5) =2448a(6) =10414a(7) =44024a(8) =186414a(9) =789100a(10) =3340345a(11) =14140347a(12) =59858152a(13) =253389483a(14) =1072638232a(15) =4540650778a(16) =19221306410a(17) =81366888278a(18) =344439152622
External references
- oeis: A228279