A027746 - cp's OEIS frontend

A027746 Irregular triangle in which first row is 1, n-th row (n>1) gives prime factors of n with repetition.

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

[1, 2, 3, 2, 2, 5, 2, 3, 7, 2, 2, 2, 3, 3, 2, 5, 11, 2, 2, 3, 13, 2, 7, 3, 5, 2, 2, 2, 2, 17, 2, 3, 3, 19, 2, 2, 5, 3, 7, 2, 11, 23, 2, 2, 2, 3, 5, 5, 2, 13, 3, 3, 3, 2, 2, 7, 29, 2, 3, 5, 31, 2, 2, 2, 2, 2, 3, 11, 2, 17, 5, 7, 2, 2, 3, 3, 37, 2, 19, 3, 13, 2, 2, 2, 5, 41, 2, 3, 7, 43, 2, 2, 11, 3, 3, 5]

cp's OEIS Frontend

A027746 Irregular triangle in which first row is 1, n-th row (n>1) gives prime factors of n with repetition.

Table of values

List of values

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

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

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