Number of series-reduced rooted identity trees whose leaves are constant integer partitions whose multiset union is an integer partition of n.

A320178

Number of series-reduced rooted identity trees whose leaves are constant integer partitions whose multiset union is an integer partition of n.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =19a(5) =53a(6) =151a(7) =459a(8) =1445a(9) =4634a(10) =15154a(11) =50253a(12) =168607a(13) =571212a(14) =1951588a(15) =6715575a(16) =23255444a(17) =80978697a(18) =283373024a(19) =995995996a(20) =3514614634a(21) =12446666967a(22) =44222390525a(23) =157587392768a(24) =563096832839

External references