A355147 - cp's OEIS frontend

A355147 Triangle read by rows: T(n,k) is the number of product-free subsets of {1,...,n} with cardinality k; n >= 0, 0 <= k <= A028391(n).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	4
12	5
13	2
14	1
15	5
16	9
17	6
18	1
19	1
20	6
21	14
22	15
23	7
24	1
25	1
26	7
27	20
28	29
29	22
30	8
31	1
32	1
33	8
34	26
35	43
36	38
37	17
38	3
39	1
40	9
41	34
42	68
43	76
44	47
45	15
46	2
47	1
48	10
49	43
50	102
51	144
52	123
53	62
54	17
55	2
56	1
57	11
58	53
59	143
60	234
61	238
62	149
63	55
64	11
65	1
66	1
67	12
68	64
69	196
70	377
71	472
72	387
73	204
74	66
75	12
76	1

[1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 4, 5, 2, 1, 5, 9, 6, 1, 1, 6, 14, 15, 7, 1, 1, 7, 20, 29, 22, 8, 1, 1, 8, 26, 43, 38, 17, 3, 1, 9, 34, 68, 76, 47, 15, 2, 1, 10, 43, 102, 144, 123, 62, 17, 2, 1, 11, 53, 143, 234, 238, 149, 55, 11, 1, 1, 12, 64, 196, 377, 472, 387, 204, 66, 12, 1]

cp's OEIS Frontend

A355147 Triangle read by rows: T(n,k) is the number of product-free subsets of {1,...,n} with cardinality k; n >= 0, 0 <= k <= A028391(n).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	4
12	5
13	2
14	1
15	5
16	9
17	6
18	1
19	1
20	6
21	14
22	15
23	7
24	1
25	1
26	7
27	20
28	29
29	22
30	8
31	1
32	1
33	8
34	26
35	43
36	38
37	17
38	3
39	1
40	9
41	34
42	68
43	76
44	47
45	15
46	2
47	1
48	10
49	43
50	102
51	144
52	123
53	62
54	17
55	2
56	1
57	11
58	53
59	143
60	234
61	238
62	149
63	55
64	11
65	1
66	1
67	12
68	64
69	196
70	377
71	472
72	387
73	204
74	66
75	12
76	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	4
12	5
13	2
14	1
15	5
16	9
17	6
18	1
19	1
20	6
21	14
22	15
23	7
24	1
25	1
26	7
27	20
28	29
29	22
30	8
31	1
32	1
33	8
34	26
35	43
36	38
37	17
38	3
39	1
40	9
41	34
42	68
43	76
44	47
45	15
46	2
47	1
48	10
49	43
50	102
51	144
52	123
53	62
54	17
55	2
56	1
57	11
58	53
59	143
60	234
61	238
62	149
63	55
64	11
65	1
66	1
67	12
68	64
69	196
70	377
71	472
72	387
73	204
74	66
75	12
76	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	4
12	5
13	2
14	1
15	5
16	9
17	6
18	1
19	1
20	6
21	14
22	15
23	7
24	1
25	1
26	7
27	20
28	29
29	22
30	8
31	1
32	1
33	8
34	26
35	43
36	38
37	17
38	3
39	1
40	9
41	34
42	68
43	76
44	47
45	15
46	2
47	1
48	10
49	43
50	102
51	144
52	123
53	62
54	17
55	2
56	1
57	11
58	53
59	143
60	234
61	238
62	149
63	55
64	11
65	1
66	1
67	12
68	64
69	196
70	377
71	472
72	387
73	204
74	66
75	12
76	1