Number of connected multiset partitions of {1, 1, 2, 2, 3, 3, ..., n, n}.

A316972

Number of connected multiset partitions of {1, 1, 2, 2, 3, 3, ..., n, n}.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =28a(4) =277a(5) =3985a(6) =76117a(7) =1833187a(8) =53756682a(9) =1871041538a(10) =75809298105

External references