A285788 - cp's OEIS frontend

A285788 Irregular triangle T(n,m): nonprime 1 <= k <= n such that n and k are coprime.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	4
10	6
11	1
12	1
13	4
14	8
15	1
16	9
17	1
18	4
19	6
20	8
21	9
22	10
23	1
24	1
25	4
26	6
27	8
28	9
29	10
30	12
31	1
32	9
33	1
34	4
35	8
36	14
37	1
38	9
39	15
40	1
41	4
42	6
43	8
44	9
45	10
46	12
47	14
48	15
49	16
50	1
51	1
52	4
53	6
54	8
55	9
56	10
57	12
58	14
59	15
60	16
61	18
62	1
63	9
64	1
65	4
66	8
67	10
68	16
69	20
70	1
71	9
72	15
73	21
74	1
75	4
76	6
77	8
78	9
79	10

[1, 1, 1, 1, 1, 4, 1, 1, 4, 6, 1, 1, 4, 8, 1, 9, 1, 4, 6, 8, 9, 10, 1, 1, 4, 6, 8, 9, 10, 12, 1, 9, 1, 4, 8, 14, 1, 9, 15, 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 1, 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 1, 9, 1, 4, 8, 10, 16, 20, 1, 9, 15, 21, 1, 4, 6, 8, 9, 10]

cp's OEIS Frontend

A285788 Irregular triangle T(n,m): nonprime 1 <= k <= n such that n and k are coprime.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	4
10	6
11	1
12	1
13	4
14	8
15	1
16	9
17	1
18	4
19	6
20	8
21	9
22	10
23	1
24	1
25	4
26	6
27	8
28	9
29	10
30	12
31	1
32	9
33	1
34	4
35	8
36	14
37	1
38	9
39	15
40	1
41	4
42	6
43	8
44	9
45	10
46	12
47	14
48	15
49	16
50	1
51	1
52	4
53	6
54	8
55	9
56	10
57	12
58	14
59	15
60	16
61	18
62	1
63	9
64	1
65	4
66	8
67	10
68	16
69	20
70	1
71	9
72	15
73	21
74	1
75	4
76	6
77	8
78	9
79	10

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	4
10	6
11	1
12	1
13	4
14	8
15	1
16	9
17	1
18	4
19	6
20	8
21	9
22	10
23	1
24	1
25	4
26	6
27	8
28	9
29	10
30	12
31	1
32	9
33	1
34	4
35	8
36	14
37	1
38	9
39	15
40	1
41	4
42	6
43	8
44	9
45	10
46	12
47	14
48	15
49	16
50	1
51	1
52	4
53	6
54	8
55	9
56	10
57	12
58	14
59	15
60	16
61	18
62	1
63	9
64	1
65	4
66	8
67	10
68	16
69	20
70	1
71	9
72	15
73	21
74	1
75	4
76	6
77	8
78	9
79	10

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	4
7	1
8	1
9	4
10	6
11	1
12	1
13	4
14	8
15	1
16	9
17	1
18	4
19	6
20	8
21	9
22	10
23	1
24	1
25	4
26	6
27	8
28	9
29	10
30	12
31	1
32	9
33	1
34	4
35	8
36	14
37	1
38	9
39	15
40	1
41	4
42	6
43	8
44	9
45	10
46	12
47	14
48	15
49	16
50	1
51	1
52	4
53	6
54	8
55	9
56	10
57	12
58	14
59	15
60	16
61	18
62	1
63	9
64	1
65	4
66	8
67	10
68	16
69	20
70	1
71	9
72	15
73	21
74	1
75	4
76	6
77	8
78	9
79	10