A238689 - cp's OEIS frontend

A238689 Table read by rows: first row is {1}; for n >1, T(n, k) is the k-th largest prime factor of n (repeated prime factors are counted repeatedly).

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

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

cp's OEIS Frontend

A238689 Table read by rows: first row is {1}; for n >1, T(n, k) is the k-th largest prime factor of n (repeated prime factors are counted repeatedly).

Table of values

List of values

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

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

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