Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301494
Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =3a(2) =15a(3) =83a(4) =329a(5) =1576a(6) =7454a(7) =35118a(8) =164664a(9) =775194a(10) =3645639a(11) =17147774a(12) =80657947a(13) =379401221a(14) =1784617859a(15) =8394449111a(16) =39485697173a(17) =185732299667a(18) =873644951720
External references
- oeis: A301494