A325481 - cp's OEIS frontend

A325481 Number of colored set partitions of [2n] where colors of the elements of subsets are distinct and in increasing order and exactly n colors are used.

n	a(n)
0	1
1	1
2	41
3	8020
4	4396189
5	5226876501
6	11581358373398
7	43225961160925257
8	252807246693691825421
9	2194141947654736889023357
10	27084992620572948369385642201
11	459597167193175440533390098112664
12	10424556988338412210154331381461375830

[1, 1, 41, 8020, 4396189, 5226876501, 11581358373398, 43225961160925257, 252807246693691825421, 2194141947654736889023357, 27084992620572948369385642201, 459597167193175440533390098112664, 10424556988338412210154331381461375830]

cp's OEIS Frontend

A325481 Number of colored set partitions of [2n] where colors of the elements of subsets are distinct and in increasing order and exactly n colors are used.

Table of values

List of values