A320177 - cp's OEIS frontend

A320177 Number of series-reduced rooted identity trees whose leaves are strict integer partitions whose multiset union is an integer partition of n.

n	a(n)
1	1
2	1
3	3
4	5
5	11
6	26
7	65
8	169
9	463
10	1294
11	3691
12	10700
13	31417
14	93175
15	278805
16	840424
17	2549895
18	7780472
19	23860359
20	73500838
21	227330605
22	705669634
23	2197750615
24	6865335389
25	21505105039
26	67533738479
27	212575923471
28	670572120240
29	2119568530289
30	6712115439347

[1, 1, 3, 5, 11, 26, 65, 169, 463, 1294, 3691, 10700, 31417, 93175, 278805, 840424, 2549895, 7780472, 23860359, 73500838, 227330605, 705669634, 2197750615, 6865335389, 21505105039, 67533738479, 212575923471, 670572120240, 2119568530289, 6712115439347]

cp's OEIS Frontend

A320177 Number of series-reduced rooted identity trees whose leaves are strict integer partitions whose multiset union is an integer partition of n.

Table of values

List of values