Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal.
A236904
Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1056a(2) =4448a(3) =19888a(4) =89888a(5) =417488a(6) =1956608a(7) =9312576a(8) =44619472a(9) =215852576a(10) =1049216928a(11) =5132538928a(12) =25195350544a(13) =124226011696a(14) =614121467712
External references
- oeis: A236904