Number of nX4 1..3 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 decreasing order.
A166846
Number of nX4 1..3 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 decreasing order.
Terms
- a(0) =0a(1) =9a(2) =109a(3) =673a(4) =2923a(5) =10112a(6) =29741a(7) =77372a(8) =182772a(9) =399321
External references
- oeis: A166846