Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
A297723
Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
Terms
- a(0) =1a(1) =87a(2) =747a(3) =4212a(4) =36981a(5) =336653a(6) =2699832a(7) =21850022a(8) =183192407a(9) =1522306495a(10) =12548589707a(11) =103837294832a(12) =860631234338
External references
- oeis: A297723