Number of (n+2) X 4 0..6 arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order.
A186908
Number of (n+2) X 4 0..6 arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order.
Terms
- a(0) =59969593a(1) =2974946682a(2) =99241308567
External references
- oeis: A186908