Number of partitions of an n-set with even number of even blocks.

A096647

Number of partitions of an n-set with even number of even blocks.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =8a(5) =27a(6) =97a(7) =443a(8) =2095a(9) =10440a(10) =58194a(11) =340375a(12) =2097933a(13) =13847485a(14) =95504749a(15) =690495874a(16) =5245040408a(17) =41428115543a(18) =340899165549

External references