1/6 the number of (n+2)X5 0..2 arrays with each 3X3 subblock containing two of one value, three of another, and four of the last.
A184406
1/6 the number of (n+2)X5 0..2 arrays with each 3X3 subblock containing two of one value, three of another, and four of the last.
Terms
- a(0) =201543a(1) =6361037a(2) =190904616a(3) =5944363862a(4) =185205695016
External references
- oeis: A184406