Sum of the sizes of the seventh blocks in all set partitions of {1,2,...,n}.
A270499
Sum of the sizes of the seventh blocks in all set partitions of {1,2,...,n}.
Terms
- a(0) =1a(1) =30a(2) =536a(3) =7473a(4) =90223a(5) =995191a(6) =10354804a(7) =103779309a(8) =1016654053a(9) =9840330258a(10) =94884791378a(11) =917358452410
External references
- oeis: A270499