A050291 - cp's OEIS frontend

A050291 Number of double-free subsets of {1, 2, ..., n}.

n	a(n)
0	1
1	2
2	3
3	6
4	10
5	20
6	30
7	60
8	96
9	192
10	288
11	576
12	960
13	1920
14	2880
15	5760
16	9360
17	18720
18	28080
19	56160
20	93600
21	187200
22	280800
23	561600
24	898560
25	1797120
26	2695680
27	5391360
28	8985600
29	17971200
30	26956800
31	53913600
32	87091200
33	174182400
34	261273600
35	522547200
36	870912000

[1, 2, 3, 6, 10, 20, 30, 60, 96, 192, 288, 576, 960, 1920, 2880, 5760, 9360, 18720, 28080, 56160, 93600, 187200, 280800, 561600, 898560, 1797120, 2695680, 5391360, 8985600, 17971200, 26956800, 53913600, 87091200, 174182400, 261273600, 522547200, 870912000]

cp's OEIS Frontend

A050291 Number of double-free subsets of {1, 2, ..., n}.

Table of values

List of values