A378367 - cp's OEIS frontend

A378367 Greatest non prime power <= n, allowing 1.

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

[1, 1, 1, 1, 1, 6, 6, 6, 6, 10, 10, 12, 12, 14, 15, 15, 15, 18, 18, 20, 21, 22, 22, 24, 24, 26, 26, 28, 28, 30, 30, 30, 33, 34, 35, 36, 36, 38, 39, 40, 40, 42, 42, 44, 45, 46, 46, 48, 48, 50, 51, 52, 52, 54, 55, 56, 57, 58, 58, 60, 60, 62, 63, 63, 65, 66, 66]

cp's OEIS Frontend

A378367 Greatest non prime power <= n, allowing 1.

Table of values

List of values

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

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

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