A330467 - cp's OEIS frontend

A330467 Number of series-reduced rooted trees whose leaves are multisets whose multiset union is a strongly normal multiset of size n.

n	a(n)
0	1
1	1
2	4
3	18
4	154
5	1614
6	23733
7	396190
8	8066984
9	183930948
10	4811382339
11	138718632336
12	4451963556127
13	155416836338920
14	5920554613563841
15	242873491536944706
16	10725017764009207613
17	505671090907469848248
18	25415190929321149684700
19	1354279188424092012064226

[1, 1, 4, 18, 154, 1614, 23733, 396190, 8066984, 183930948, 4811382339, 138718632336, 4451963556127, 155416836338920, 5920554613563841, 242873491536944706, 10725017764009207613, 505671090907469848248, 25415190929321149684700, 1354279188424092012064226]

cp's OEIS Frontend

A330467 Number of series-reduced rooted trees whose leaves are multisets whose multiset union is a strongly normal multiset of size n.

Table of values

List of values