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 nonincreasing order.
A166835
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 nonincreasing order.
Terms
- a(0) =3a(1) =69a(2) =419a(3) =1726a(4) =5770a(5) =16740a(6) =43595a(7) =104045a(8) =230887a(9) =481629
External references
- oeis: A166835