A059849 - cp's OEIS frontend

A059849 Number of pairs of partitions of {1,2,...,n} whose meet is the partition {{1}, {2}, ..., {n}}.

n	a(n)
0	1
1	1
2	3
3	15
4	113
5	1153
6	15125
7	245829
8	4815403
9	111308699
10	2985997351
11	91712874487
12	3189130896077
13	124366296990757
14	5395176819674205
15	258547307299130037
16	13603419571939001827
17	781604484498111072195
18	48806254671145521802863
19	3298007680091577596528415

[1, 1, 3, 15, 113, 1153, 15125, 245829, 4815403, 111308699, 2985997351, 91712874487, 3189130896077, 124366296990757, 5395176819674205, 258547307299130037, 13603419571939001827, 781604484498111072195, 48806254671145521802863, 3298007680091577596528415]

cp's OEIS Frontend

A059849 Number of pairs of partitions of {1,2,...,n} whose meet is the partition {{1}, {2}, ..., {n}}.

Table of values

List of values