Sum of the sizes of the fifth blocks in all set partitions of {1,2,...,n}.
A270497
Sum of the sizes of the fifth blocks in all set partitions of {1,2,...,n}.
Terms
- a(0) =1a(1) =17a(2) =184a(3) =1641a(4) =13276a(5) =102244a(6) =770989a(7) =5795889a(8) =43967302a(9) =339403001a(10) =2681449074a(11) =21763977864a(12) =181900742989
External references
- oeis: A270497