A304038 - cp's OEIS frontend

A304038 Irregular triangle T(n,k) read by rows: first row is 0, n-th row (n > 1) lists indices of distinct primes dividing n.

n	a(n)
1	0
2	1
3	2
4	1
5	3
6	1
7	2
8	4
9	1
10	2
11	1
12	3
13	5
14	1
15	2
16	6
17	1
18	4
19	2
20	3
21	1
22	7
23	1
24	2
25	8
26	1
27	3
28	2
29	4
30	1
31	5
32	9
33	1
34	2
35	3
36	1
37	6
38	2
39	1
40	4
41	10
42	1
43	2
44	3
45	11
46	1
47	2
48	5
49	1
50	7
51	3
52	4
53	1
54	2
55	12
56	1
57	8
58	2
59	6
60	1
61	3
62	13
63	1
64	2
65	4
66	14
67	1
68	5
69	2
70	3
71	1
72	9
73	15
74	1
75	2
76	4
77	1
78	3
79	2
80	7
81	1
82	6
83	16
84	1
85	2
86	3
87	5
88	1
89	4
90	2
91	8
92	1
93	10
94	17
95	1
96	2
97	3
98	18
99	1
100	11

[0, 1, 2, 1, 3, 1, 2, 4, 1, 2, 1, 3, 5, 1, 2, 6, 1, 4, 2, 3, 1, 7, 1, 2, 8, 1, 3, 2, 4, 1, 5, 9, 1, 2, 3, 1, 6, 2, 1, 4, 10, 1, 2, 3, 11, 1, 2, 5, 1, 7, 3, 4, 1, 2, 12, 1, 8, 2, 6, 1, 3, 13, 1, 2, 4, 14, 1, 5, 2, 3, 1, 9, 15, 1, 2, 4, 1, 3, 2, 7, 1, 6, 16, 1, 2, 3, 5, 1, 4, 2, 8, 1, 10, 17, 1, 2, 3, 18, 1, 11]

cp's OEIS Frontend

A304038 Irregular triangle T(n,k) read by rows: first row is 0, n-th row (n > 1) lists indices of distinct primes dividing n.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	1
5	3
6	1
7	2
8	4
9	1
10	2
11	1
12	3
13	5
14	1
15	2
16	6
17	1
18	4
19	2
20	3
21	1
22	7
23	1
24	2
25	8
26	1
27	3
28	2
29	4
30	1
31	5
32	9
33	1
34	2
35	3
36	1
37	6
38	2
39	1
40	4
41	10
42	1
43	2
44	3
45	11
46	1
47	2
48	5
49	1
50	7
51	3
52	4
53	1
54	2
55	12
56	1
57	8
58	2
59	6
60	1
61	3
62	13
63	1
64	2
65	4
66	14
67	1
68	5
69	2
70	3
71	1
72	9
73	15
74	1
75	2
76	4
77	1
78	3
79	2
80	7
81	1
82	6
83	16
84	1
85	2
86	3
87	5
88	1
89	4
90	2
91	8
92	1
93	10
94	17
95	1
96	2
97	3
98	18
99	1
100	11

n	a(n)
1	0
2	1
3	2
4	1
5	3
6	1
7	2
8	4
9	1
10	2
11	1
12	3
13	5
14	1
15	2
16	6
17	1
18	4
19	2
20	3
21	1
22	7
23	1
24	2
25	8
26	1
27	3
28	2
29	4
30	1
31	5
32	9
33	1
34	2
35	3
36	1
37	6
38	2
39	1
40	4
41	10
42	1
43	2
44	3
45	11
46	1
47	2
48	5
49	1
50	7
51	3
52	4
53	1
54	2
55	12
56	1
57	8
58	2
59	6
60	1
61	3
62	13
63	1
64	2
65	4
66	14
67	1
68	5
69	2
70	3
71	1
72	9
73	15
74	1
75	2
76	4
77	1
78	3
79	2
80	7
81	1
82	6
83	16
84	1
85	2
86	3
87	5
88	1
89	4
90	2
91	8
92	1
93	10
94	17
95	1
96	2
97	3
98	18
99	1
100	11

n	a(n)
1	0
2	1
3	2
4	1
5	3
6	1
7	2
8	4
9	1
10	2
11	1
12	3
13	5
14	1
15	2
16	6
17	1
18	4
19	2
20	3
21	1
22	7
23	1
24	2
25	8
26	1
27	3
28	2
29	4
30	1
31	5
32	9
33	1
34	2
35	3
36	1
37	6
38	2
39	1
40	4
41	10
42	1
43	2
44	3
45	11
46	1
47	2
48	5
49	1
50	7
51	3
52	4
53	1
54	2
55	12
56	1
57	8
58	2
59	6
60	1
61	3
62	13
63	1
64	2
65	4
66	14
67	1
68	5
69	2
70	3
71	1
72	9
73	15
74	1
75	2
76	4
77	1
78	3
79	2
80	7
81	1
82	6
83	16
84	1
85	2
86	3
87	5
88	1
89	4
90	2
91	8
92	1
93	10
94	17
95	1
96	2
97	3
98	18
99	1
100	11