Number of 4 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1's.
A297657
Number of 4 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1's.
Terms
- a(0) =1a(1) =126a(2) =1421a(3) =11024a(4) =131044a(5) =1580681a(6) =16899640a(7) =184447765a(8) =2071914854a(9) =22993996808a(10) =253857329257
External references
- oeis: A297657