A215405 - cp's OEIS frontend

A215405 Largest prime factor of the n-th n-almost prime.

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

[2, 3, 3, 5, 3, 7, 5, 3, 7, 11, 5, 5, 13, 3, 7, 11, 5, 17, 7, 5, 19, 13, 3, 23, 7, 7, 11, 5, 17, 7, 11, 5, 19, 29, 13, 31, 5, 13, 3, 23, 7, 7, 37, 11, 5, 17, 11, 7, 41, 11, 5, 17, 19, 43, 29, 7, 13, 13, 31, 5, 47, 19, 13, 3, 23, 53, 7, 7, 37]

cp's OEIS Frontend

A215405 Largest prime factor of the n-th n-almost prime.

Table of values

List of values

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

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

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