Sum of multinomials M(n-k; p_1-1, ..., p_k-1), where p = (p_1, ..., p_k) ranges over all partitions of n into distinct parts (k is a partition length).

A326493

Sum of multinomials M(n-k; p_1-1, ..., p_k-1), where p = (p_1, ..., p_k) ranges over all partitions of n into distinct parts (k is a partition length).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =5a(6) =9a(7) =21a(8) =38a(9) =146a(10) =322a(11) =902a(12) =3106a(13) =8406a(14) =35865a(15) =123321a(16) =393691a(17) =1442688a(18) =7310744a(19) =23471306a(20) =129918661a(21) =500183094a(22) =2400722981a(23) =9592382321a(24) =47764284769a(25) =280267554944

External references