A113235 - cp's OEIS frontend

A113235 Number of partitions of {1,..,n} into any number of lists of size not equal to 2, where a list means an ordered subset, cf. A000262.

n	a(n)
0	1
1	1
2	1
3	7
4	49
5	301
6	2281
7	21211
8	220417
9	2528569
10	32014801
11	442974511
12	6638604721
13	107089487077
14	1849731389689
15	34051409587651
16	665366551059841
17	13751213558077681
18	299644435399909537
19	6864906328749052759
20	164941239260973870001
21	4146673091958686331421

[1, 1, 1, 7, 49, 301, 2281, 21211, 220417, 2528569, 32014801, 442974511, 6638604721, 107089487077, 1849731389689, 34051409587651, 665366551059841, 13751213558077681, 299644435399909537, 6864906328749052759, 164941239260973870001, 4146673091958686331421]

cp's OEIS Frontend

A113235 Number of partitions of {1,..,n} into any number of lists of size not equal to 2, where a list means an ordered subset, cf. A000262.

Table of values

List of values