Number of set partitions of [n] into exactly eight blocks such that all odd elements are in blocks with an odd index and all even elements are in blocks with an even index.
A274872
Number of set partitions of [n] into exactly eight blocks such that all odd elements are in blocks with an odd index and all even elements are in blocks with an even index.
Terms
- a(0) =1a(1) =4a(2) =50a(3) =200a(4) =1519a(5) =6076a(6) =36564a(7) =146256a(8) =770481a(9) =3081924a(10) =14934774a(11) =59739096a(12) =273905827a(13) =1095623308a(14) =4836291512a(15) =19345166048a(16) =83144608885a(17) =332578435540
External references
- oeis: A274872