A377781 - cp's OEIS frontend

A377781 First differences of A065514(n) = greatest number < prime(n) that is 1 or a prime-power.

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

[1, 2, 1, 4, 2, 5, 1, 2, 8, 2, 3, 5, 4, 2, 6, 4, 6, 5, 3, 4, 2, 8, 2, 6, 8, 4, 2, 4, 2, 16, 3, 3, 6, 2, 10, 2, 6, 6, 6, 4, 6, 2, 10, 2, 4, 2, 12, 12, 4, 2, 4, 6, 4, 13, 1, 6, 6, 2, 6, 4, 8, 4, 14, 4, 2, 4, 14, 12, 4, 2, 4, 8, 6, 6, 6, 4, 6, 8, 4, 8, 10, 2, 10]

cp's OEIS Frontend

A377781 First differences of A065514(n) = greatest number < prime(n) that is 1 or a prime-power.

Table of values

List of values

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

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

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