Total number of occurrences of the pattern 1<2<3 in all preferential arrangements (or ordered partitions) of n elements.
A240800
Total number of occurrences of the pattern 1<2<3 in all preferential arrangements (or ordered partitions) of n elements.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =28a(4) =570a(5) =10700a(6) =200235a(7) =3857672a(8) =77620788a(9) =1641549000a(10) =36576771165a(11) =859032716740
External references
- oeis: A240800