Number of 3-block covers of a labeled n-set.
A095152
Number of 3-block covers of a labeled n-set.
Terms
- a(0) =1a(1) =32a(2) =321a(3) =2560a(4) =18881a(5) =135072a(6) =954241a(7) =6705920a(8) =47020161a(9) =329377312a(10) =2306349761a(11) =16146574080a(12) =113032395841a(13) =791245902752
External references
- oeis: A095152