Total number of occurrences of the pattern 1<2 in all preferential arrangements (or ordered partitions) of n elements.
A240796
Total number of occurrences of the pattern 1<2 in all preferential arrangements (or ordered partitions) of n elements.
Terms
- a(0) =0a(1) =1a(2) =15a(3) =186a(4) =2330a(5) =31065a(6) =447405a(7) =6979588a(8) =117745668a(9) =2141106795a(10) =41810587775a(11) =873474855726
External references
- oeis: A240796