A103580 - cp's OEIS frontend

A103580 Number of nonempty subsets S of {1,2,3,...,n} that have the property that no element x of S is a nonnegative integer linear combination of elements of S-{x}.

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	15
7	26
8	36
9	57
10	79
11	130
12	170
13	276
14	379
15	579
16	784
17	1249
18	1654
19	2615
20	3515
21	5343
22	7256
23	11352
24	14930
25	23203
26	31378
27	47510
28	63777
29	98680
30	130502
31	201356
32	270037
33	407428
34	548089
35	840170
36	1110428
37	1701871
38	2284324
39	3440336
40	4601655

[1, 2, 4, 6, 11, 15, 26, 36, 57, 79, 130, 170, 276, 379, 579, 784, 1249, 1654, 2615, 3515, 5343, 7256, 11352, 14930, 23203, 31378, 47510, 63777, 98680, 130502, 201356, 270037, 407428, 548089, 840170, 1110428, 1701871, 2284324, 3440336, 4601655]

cp's OEIS Frontend

A103580 Number of nonempty subsets S of {1,2,3,...,n} that have the property that no element x of S is a nonnegative integer linear combination of elements of S-{x}.

Table of values

List of values