A381476 - cp's OEIS frontend

A381476 Triangle read by rows: T(n,k) is the number of subsets of {1..n} with k elements such that every pair of distinct elements has a different difference, 0 <= k <= A143824(n).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	4
11	6
12	2
13	1
14	5
15	10
16	6
17	1
18	6
19	15
20	14
21	1
22	7
23	21
24	26
25	2
26	1
27	8
28	28
29	44
30	10
31	1
32	9
33	36
34	68
35	26
36	1
37	10
38	45
39	100
40	60
41	1
42	11
43	55
44	140
45	110
46	1
47	12
48	66
49	190
50	190
51	4
52	1
53	13
54	78
55	250
56	304
57	22
58	1
59	14
60	91
61	322
62	466
63	68
64	1
65	15
66	105
67	406
68	676
69	156

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 4, 6, 2, 1, 5, 10, 6, 1, 6, 15, 14, 1, 7, 21, 26, 2, 1, 8, 28, 44, 10, 1, 9, 36, 68, 26, 1, 10, 45, 100, 60, 1, 11, 55, 140, 110, 1, 12, 66, 190, 190, 4, 1, 13, 78, 250, 304, 22, 1, 14, 91, 322, 466, 68, 1, 15, 105, 406, 676, 156]

cp's OEIS Frontend

A381476 Triangle read by rows: T(n,k) is the number of subsets of {1..n} with k elements such that every pair of distinct elements has a different difference, 0 <= k <= A143824(n).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	4
11	6
12	2
13	1
14	5
15	10
16	6
17	1
18	6
19	15
20	14
21	1
22	7
23	21
24	26
25	2
26	1
27	8
28	28
29	44
30	10
31	1
32	9
33	36
34	68
35	26
36	1
37	10
38	45
39	100
40	60
41	1
42	11
43	55
44	140
45	110
46	1
47	12
48	66
49	190
50	190
51	4
52	1
53	13
54	78
55	250
56	304
57	22
58	1
59	14
60	91
61	322
62	466
63	68
64	1
65	15
66	105
67	406
68	676
69	156

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	4
11	6
12	2
13	1
14	5
15	10
16	6
17	1
18	6
19	15
20	14
21	1
22	7
23	21
24	26
25	2
26	1
27	8
28	28
29	44
30	10
31	1
32	9
33	36
34	68
35	26
36	1
37	10
38	45
39	100
40	60
41	1
42	11
43	55
44	140
45	110
46	1
47	12
48	66
49	190
50	190
51	4
52	1
53	13
54	78
55	250
56	304
57	22
58	1
59	14
60	91
61	322
62	466
63	68
64	1
65	15
66	105
67	406
68	676
69	156

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	4
11	6
12	2
13	1
14	5
15	10
16	6
17	1
18	6
19	15
20	14
21	1
22	7
23	21
24	26
25	2
26	1
27	8
28	28
29	44
30	10
31	1
32	9
33	36
34	68
35	26
36	1
37	10
38	45
39	100
40	60
41	1
42	11
43	55
44	140
45	110
46	1
47	12
48	66
49	190
50	190
51	4
52	1
53	13
54	78
55	250
56	304
57	22
58	1
59	14
60	91
61	322
62	466
63	68
64	1
65	15
66	105
67	406
68	676
69	156