Number of set partitions of [n] with alternating parity of elements and exactly six blocks.

A305780

Number of set partitions of [n] with alternating parity of elements and exactly six blocks.

Terms

    a(0) =1a(1) =6a(2) =27a(3) =108a(4) =409a(5) =1558a(6) =5692a(7) =21328a(8) =76468a(9) =282885a(10) =999383a(11) =3656887a(12) =12772925a(13) =46306978a(14) =160408850a(15) =577077226a(16) =1987559778a(17) =7105490315a(18) =24379316121a(19) =86719101209a(20) =296819500851

External references