Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.
A221305
Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.
Terms
- a(0) =0a(1) =10a(2) =0a(3) =312a(4) =0a(5) =10042a(6) =0a(7) =319226a(8) =0a(9) =10133708a(10) =0a(11) =321533586a(12) =0a(13) =10200714244a(14) =0a(15) =323608871782a(16) =0a(18) =0a(20) =0a(22) =0a(24) =0a(26) =0a(28) =0
External references
- oeis: A221305