A111752 - cp's OEIS frontend

A111752 Number of partitions of {1,..,n} into lists with an even number of lists of size 1, where a list means an ordered subset (cf. A000262).

n	a(n)
0	1
1	0
2	3
3	6
4	49
5	300
6	2491
7	22890
8	239457
9	2782584
10	35595091
11	496577070
12	7499663953
13	121855323876
14	2118793593099
15	39245026343250
16	771255810671041
17	16025261292247920
18	350956070419872547
19	8078570913162379734
20	194969375055353840241
21	4922311437793379501340

[1, 0, 3, 6, 49, 300, 2491, 22890, 239457, 2782584, 35595091, 496577070, 7499663953, 121855323876, 2118793593099, 39245026343250, 771255810671041, 16025261292247920, 350956070419872547, 8078570913162379734, 194969375055353840241, 4922311437793379501340]

cp's OEIS Frontend

A111752 Number of partitions of {1,..,n} into lists with an even number of lists of size 1, where a list means an ordered subset (cf. A000262).

Table of values

List of values