A057669 - cp's OEIS frontend

A057669 Triangle T(n,k) of number of minimal 3-covers of an unlabeled n+3-set that cover k points of that set uniquely (k=3,..,n+3).

n	a(n)
0	1
1	2
2	1
3	4
4	3
5	2
6	7
7	7
8	6
9	3
10	11
11	13
12	14
13	9
14	4
15	16
16	22
17	26
18	21
19	13
20	5
21	23
22	34
23	44
24	40
25	31
26	17
27	7
28	31
29	50
30	68
31	68
32	59
33	41
34	23
35	8
36	41
37	70
38	100
39	106
40	101
41	79
42	55
43	28
44	10
45	53
46	95
47	140
48	157
49	158
50	136
51	106
52	68
53	35
54	12
55	67
56	125
57	190
58	221
59	234
60	214
61	182
62	132
63	85
64	42
65	14
66	83
67	161

[1, 2, 1, 4, 3, 2, 7, 7, 6, 3, 11, 13, 14, 9, 4, 16, 22, 26, 21, 13, 5, 23, 34, 44, 40, 31, 17, 7, 31, 50, 68, 68, 59, 41, 23, 8, 41, 70, 100, 106, 101, 79, 55, 28, 10, 53, 95, 140, 157, 158, 136, 106, 68, 35, 12, 67, 125, 190, 221, 234, 214, 182, 132, 85, 42, 14, 83, 161]

cp's OEIS Frontend

A057669 Triangle T(n,k) of number of minimal 3-covers of an unlabeled n+3-set that cover k points of that set uniquely (k=3,..,n+3).

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	4
4	3
5	2
6	7
7	7
8	6
9	3
10	11
11	13
12	14
13	9
14	4
15	16
16	22
17	26
18	21
19	13
20	5
21	23
22	34
23	44
24	40
25	31
26	17
27	7
28	31
29	50
30	68
31	68
32	59
33	41
34	23
35	8
36	41
37	70
38	100
39	106
40	101
41	79
42	55
43	28
44	10
45	53
46	95
47	140
48	157
49	158
50	136
51	106
52	68
53	35
54	12
55	67
56	125
57	190
58	221
59	234
60	214
61	182
62	132
63	85
64	42
65	14
66	83
67	161

n	a(n)
0	1
1	2
2	1
3	4
4	3
5	2
6	7
7	7
8	6
9	3
10	11
11	13
12	14
13	9
14	4
15	16
16	22
17	26
18	21
19	13
20	5
21	23
22	34
23	44
24	40
25	31
26	17
27	7
28	31
29	50
30	68
31	68
32	59
33	41
34	23
35	8
36	41
37	70
38	100
39	106
40	101
41	79
42	55
43	28
44	10
45	53
46	95
47	140
48	157
49	158
50	136
51	106
52	68
53	35
54	12
55	67
56	125
57	190
58	221
59	234
60	214
61	182
62	132
63	85
64	42
65	14
66	83
67	161

n	a(n)
0	1
1	2
2	1
3	4
4	3
5	2
6	7
7	7
8	6
9	3
10	11
11	13
12	14
13	9
14	4
15	16
16	22
17	26
18	21
19	13
20	5
21	23
22	34
23	44
24	40
25	31
26	17
27	7
28	31
29	50
30	68
31	68
32	59
33	41
34	23
35	8
36	41
37	70
38	100
39	106
40	101
41	79
42	55
43	28
44	10
45	53
46	95
47	140
48	157
49	158
50	136
51	106
52	68
53	35
54	12
55	67
56	125
57	190
58	221
59	234
60	214
61	182
62	132
63	85
64	42
65	14
66	83
67	161