A321712 - cp's OEIS frontend

A321712 Number of partitions of a 2n-set into colored blocks, such that exactly n colors are used and the colors are introduced in increasing order.

n	a(n)
0	1
1	2
2	32
3	945
4	40992
5	2350950
6	167829629
7	14342726398
8	1427875921472
9	162295947266310
10	20738354463124740
11	2942918038945276392
12	459208250931426639151
13	78145305037982571857910
14	14403186440935002502579620
15	2858375634375573872689073400
16	607685050482829924986457079520

[1, 2, 32, 945, 40992, 2350950, 167829629, 14342726398, 1427875921472, 162295947266310, 20738354463124740, 2942918038945276392, 459208250931426639151, 78145305037982571857910, 14403186440935002502579620, 2858375634375573872689073400, 607685050482829924986457079520]

cp's OEIS Frontend

A321712 Number of partitions of a 2n-set into colored blocks, such that exactly n colors are used and the colors are introduced in increasing order.

Table of values

List of values