Number of nX4 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two exactly once.
A268785
Number of nX4 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two exactly once.
Terms
- a(0) =5a(1) =48a(2) =302a(3) =1714a(4) =9085a(5) =46195a(6) =228384a(7) =1105510a(8) =5267662a(9) =24786180a(10) =115455033a(11) =533317129a(12) =2446323573a(13) =11154503019a(14) =50600348892a(15) =228514035985
External references
- oeis: A268785