A072918 - cp's OEIS frontend

A072918 a(n) = p(n) - sigma(n), where p(n) is the least prime greater than sigma(n).

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	1
7	3
8	2
9	4
10	1
11	1
12	1
13	3
14	5
15	5
16	6
17	1
18	2
19	3
20	1
21	5
22	1
23	5
24	1
25	6
26	1
27	1
28	3
29	1
30	1
31	5
32	4
33	5
34	5
35	5
36	6
37	3
38	1
39	3
40	7
41	1
42	1
43	3
44	5
45	1
46	1
47	5
48	3
49	2
50	4
51	1
52	3
53	5
54	7
55	1
56	7
57	3
58	7
59	1
60	5
61	5
62	1
63	3
64	4
65	5
66	5
67	3
68	1
69	1
70	5
71	1
72	2
73	5
74	13
75	3
76	9
77	1
78	5
79	3
80	5
81	6
82	1
83	5
84	3
85	1
86	5
87	7
88	1
89	7
90	5
91	1
92	5
93	3
94	5
95	7
96	5
97	3
98	2
99	1
100	6

[1, 2, 1, 4, 1, 1, 3, 2, 4, 1, 1, 1, 3, 5, 5, 6, 1, 2, 3, 1, 5, 1, 5, 1, 6, 1, 1, 3, 1, 1, 5, 4, 5, 5, 5, 6, 3, 1, 3, 7, 1, 1, 3, 5, 1, 1, 5, 3, 2, 4, 1, 3, 5, 7, 1, 7, 3, 7, 1, 5, 5, 1, 3, 4, 5, 5, 3, 1, 1, 5, 1, 2, 5, 13, 3, 9, 1, 5, 3, 5, 6, 1, 5, 3, 1, 5, 7, 1, 7, 5, 1, 5, 3, 5, 7, 5, 3, 2, 1, 6]

cp's OEIS Frontend

A072918 a(n) = p(n) - sigma(n), where p(n) is the least prime greater than sigma(n).

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	1
7	3
8	2
9	4
10	1
11	1
12	1
13	3
14	5
15	5
16	6
17	1
18	2
19	3
20	1
21	5
22	1
23	5
24	1
25	6
26	1
27	1
28	3
29	1
30	1
31	5
32	4
33	5
34	5
35	5
36	6
37	3
38	1
39	3
40	7
41	1
42	1
43	3
44	5
45	1
46	1
47	5
48	3
49	2
50	4
51	1
52	3
53	5
54	7
55	1
56	7
57	3
58	7
59	1
60	5
61	5
62	1
63	3
64	4
65	5
66	5
67	3
68	1
69	1
70	5
71	1
72	2
73	5
74	13
75	3
76	9
77	1
78	5
79	3
80	5
81	6
82	1
83	5
84	3
85	1
86	5
87	7
88	1
89	7
90	5
91	1
92	5
93	3
94	5
95	7
96	5
97	3
98	2
99	1
100	6

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	1
7	3
8	2
9	4
10	1
11	1
12	1
13	3
14	5
15	5
16	6
17	1
18	2
19	3
20	1
21	5
22	1
23	5
24	1
25	6
26	1
27	1
28	3
29	1
30	1
31	5
32	4
33	5
34	5
35	5
36	6
37	3
38	1
39	3
40	7
41	1
42	1
43	3
44	5
45	1
46	1
47	5
48	3
49	2
50	4
51	1
52	3
53	5
54	7
55	1
56	7
57	3
58	7
59	1
60	5
61	5
62	1
63	3
64	4
65	5
66	5
67	3
68	1
69	1
70	5
71	1
72	2
73	5
74	13
75	3
76	9
77	1
78	5
79	3
80	5
81	6
82	1
83	5
84	3
85	1
86	5
87	7
88	1
89	7
90	5
91	1
92	5
93	3
94	5
95	7
96	5
97	3
98	2
99	1
100	6

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	1
7	3
8	2
9	4
10	1
11	1
12	1
13	3
14	5
15	5
16	6
17	1
18	2
19	3
20	1
21	5
22	1
23	5
24	1
25	6
26	1
27	1
28	3
29	1
30	1
31	5
32	4
33	5
34	5
35	5
36	6
37	3
38	1
39	3
40	7
41	1
42	1
43	3
44	5
45	1
46	1
47	5
48	3
49	2
50	4
51	1
52	3
53	5
54	7
55	1
56	7
57	3
58	7
59	1
60	5
61	5
62	1
63	3
64	4
65	5
66	5
67	3
68	1
69	1
70	5
71	1
72	2
73	5
74	13
75	3
76	9
77	1
78	5
79	3
80	5
81	6
82	1
83	5
84	3
85	1
86	5
87	7
88	1
89	7
90	5
91	1
92	5
93	3
94	5
95	7
96	5
97	3
98	2
99	1
100	6