Number of partitions of a 2n-set into even blocks.
A005046
Number of partitions of a 2n-set into even blocks.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =31a(4) =379a(5) =6556a(6) =150349a(7) =4373461a(8) =156297964a(9) =6698486371a(10) =337789490599
External references
- oeis: A005046