A384046 - cp's OEIS frontend

A384046 Triangle in which the n-th row gives the numbers from 1 to n whose largest divisor that is a unitary divisor of n is 1.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	1
9	2
10	3
11	4
12	1
13	5
14	1
15	2
16	3
17	4
18	5
19	6
20	1
21	2
22	3
23	4
24	5
25	6
26	7
27	1
28	2
29	3
30	4
31	5
32	6
33	7
34	8
35	1
36	3
37	7
38	9
39	1
40	2
41	3
42	4
43	5
44	6
45	7
46	8
47	9
48	10
49	1
50	2
51	5
52	7
53	10
54	11
55	1
56	2
57	3
58	4
59	5
60	6
61	7
62	8
63	9
64	10
65	11
66	12
67	1
68	3
69	5
70	9
71	11
72	13
73	1
74	2
75	4
76	7
77	8
78	11
79	13
80	14
81	1
82	2
83	3
84	4
85	5
86	6
87	7
88	8
89	9
90	10
91	11
92	12
93	13
94	14
95	15

[1, 1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 1, 5, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 1, 3, 7, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 5, 7, 10, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 3, 5, 9, 11, 13, 1, 2, 4, 7, 8, 11, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]

cp's OEIS Frontend

A384046 Triangle in which the n-th row gives the numbers from 1 to n whose largest divisor that is a unitary divisor of n is 1.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	1
9	2
10	3
11	4
12	1
13	5
14	1
15	2
16	3
17	4
18	5
19	6
20	1
21	2
22	3
23	4
24	5
25	6
26	7
27	1
28	2
29	3
30	4
31	5
32	6
33	7
34	8
35	1
36	3
37	7
38	9
39	1
40	2
41	3
42	4
43	5
44	6
45	7
46	8
47	9
48	10
49	1
50	2
51	5
52	7
53	10
54	11
55	1
56	2
57	3
58	4
59	5
60	6
61	7
62	8
63	9
64	10
65	11
66	12
67	1
68	3
69	5
70	9
71	11
72	13
73	1
74	2
75	4
76	7
77	8
78	11
79	13
80	14
81	1
82	2
83	3
84	4
85	5
86	6
87	7
88	8
89	9
90	10
91	11
92	12
93	13
94	14
95	15

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	1
9	2
10	3
11	4
12	1
13	5
14	1
15	2
16	3
17	4
18	5
19	6
20	1
21	2
22	3
23	4
24	5
25	6
26	7
27	1
28	2
29	3
30	4
31	5
32	6
33	7
34	8
35	1
36	3
37	7
38	9
39	1
40	2
41	3
42	4
43	5
44	6
45	7
46	8
47	9
48	10
49	1
50	2
51	5
52	7
53	10
54	11
55	1
56	2
57	3
58	4
59	5
60	6
61	7
62	8
63	9
64	10
65	11
66	12
67	1
68	3
69	5
70	9
71	11
72	13
73	1
74	2
75	4
76	7
77	8
78	11
79	13
80	14
81	1
82	2
83	3
84	4
85	5
86	6
87	7
88	8
89	9
90	10
91	11
92	12
93	13
94	14
95	15

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	3
8	1
9	2
10	3
11	4
12	1
13	5
14	1
15	2
16	3
17	4
18	5
19	6
20	1
21	2
22	3
23	4
24	5
25	6
26	7
27	1
28	2
29	3
30	4
31	5
32	6
33	7
34	8
35	1
36	3
37	7
38	9
39	1
40	2
41	3
42	4
43	5
44	6
45	7
46	8
47	9
48	10
49	1
50	2
51	5
52	7
53	10
54	11
55	1
56	2
57	3
58	4
59	5
60	6
61	7
62	8
63	9
64	10
65	11
66	12
67	1
68	3
69	5
70	9
71	11
72	13
73	1
74	2
75	4
76	7
77	8
78	11
79	13
80	14
81	1
82	2
83	3
84	4
85	5
86	6
87	7
88	8
89	9
90	10
91	11
92	12
93	13
94	14
95	15