Number of (n+2)X6 0..3 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
A184569
Number of (n+2)X6 0..3 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
Terms
- a(0) =2430950a(1) =37767705a(2) =380532059a(3) =2943827443a(4) =18803004899a(5) =103444456133a(6) =503785839330
External references
- oeis: A184569