A375708 - cp's OEIS frontend

A375708 First differences of non-prime-powers (exclusive, so 1 is not a prime-power).

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

[5, 4, 2, 2, 1, 3, 2, 1, 1, 2, 2, 2, 2, 3, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 2, 1]

cp's OEIS Frontend

A375708 First differences of non-prime-powers (exclusive, so 1 is not a prime-power).

Table of values

List of values

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

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

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