Number of n X 4 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.
A166824
Number of n X 4 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.
Terms
- a(0) =1a(1) =92a(2) =1950a(3) =18821a(4) =117600a(5) =558447
External references
- oeis: A166824