Alternating sums of the ordered Bell numbers (number of preferential arrangements) A000670.
A217388
Alternating sums of the ordered Bell numbers (number of preferential arrangements) A000670.
Terms
- a(0) =1a(1) =0a(2) =3a(3) =10a(4) =65a(5) =476a(6) =4207a(7) =43086a(8) =502749a(9) =6584512a(10) =95663051a(11) =1526969522a(12) =26564598073a(13) =500293750308
External references
- oeis: A217388