Number of set partitions of [2n] with largest set of size n.

A276961

Number of set partitions of [2n] with largest set of size n.

Terms

    a(0) =1a(1) =1a(2) =9a(3) =90a(4) =1015a(5) =12978a(6) =187110a(7) =3008148a(8) =53275365a(9) =1028142830a(10) =21426984722a(11) =478684639524

External references