Number of nX3 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).
A229842
Number of nX3 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).
Terms
- a(0) =3a(1) =81a(2) =987a(3) =13401a(4) =178311a(5) =2381469a(6) =31783299a(7) =424240833a(8) =5662582239a(9) =75582071565
External references
- oeis: A229842