Number of nX3 0..2 arrays with exactly floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A223111
Number of nX3 0..2 arrays with exactly floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =28a(2) =269a(3) =6676a(4) =92011a(5) =2301900a(6) =32735497a(7) =837862668a(8) =12106093706a(9) =313968808894
External references
- oeis: A223111