Number of n X n 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301958
Number of n X n 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =16a(3) =64a(4) =311a(5) =2544a(6) =33860a(7) =655332a(8) =20467528a(9) =1126897464a(10) =99461928147
External references
- oeis: A301958