A202111 - cp's OEIS frontend

A202111 a(n) = sigma(n) - p, where p is the largest prime < sigma(n).

n	a(n)
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	5
13	1
14	1
15	1
16	2
17	1
18	2
19	1
20	1
21	1
22	5
23	1
24	1
25	2
26	1
27	3
28	3
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	3
40	1
41	1
42	7
43	1
44	1
45	5
46	1
47	1
48	11
49	4
50	4
51	1
52	1
53	1
54	7
55	1
56	7
57	1
58	1
59	1
60	1
61	1
62	7
63	1
64	14
65	1
66	5
67	1
68	13
69	7
70	5
71	1
72	2
73	1
74	1
75	11
76	1
77	7
78	1
79	1
80	5
81	8
82	13
83	1
84	1
85	1
86	1
87	7
88	1
89	1
90	1
91	3
92	1
93	1
94	5
95	7
96	1
97	1
98	4
99	5
100	6
101	1
102	5
103	1
104	11
105	1
106	5

[1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 5, 1, 1, 1, 2, 1, 2, 1, 1, 1, 5, 1, 1, 2, 1, 3, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 3, 1, 1, 7, 1, 1, 5, 1, 1, 11, 4, 4, 1, 1, 1, 7, 1, 7, 1, 1, 1, 1, 1, 7, 1, 14, 1, 5, 1, 13, 7, 5, 1, 2, 1, 1, 11, 1, 7, 1, 1, 5, 8, 13, 1, 1, 1, 1, 7, 1, 1, 1, 3, 1, 1, 5, 7, 1, 1, 4, 5, 6, 1, 5, 1, 11, 1, 5]

cp's OEIS Frontend

A202111 a(n) = sigma(n) - p, where p is the largest prime < sigma(n).

Table of values

List of values

n	a(n)
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	5
13	1
14	1
15	1
16	2
17	1
18	2
19	1
20	1
21	1
22	5
23	1
24	1
25	2
26	1
27	3
28	3
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	3
40	1
41	1
42	7
43	1
44	1
45	5
46	1
47	1
48	11
49	4
50	4
51	1
52	1
53	1
54	7
55	1
56	7
57	1
58	1
59	1
60	1
61	1
62	7
63	1
64	14
65	1
66	5
67	1
68	13
69	7
70	5
71	1
72	2
73	1
74	1
75	11
76	1
77	7
78	1
79	1
80	5
81	8
82	13
83	1
84	1
85	1
86	1
87	7
88	1
89	1
90	1
91	3
92	1
93	1
94	5
95	7
96	1
97	1
98	4
99	5
100	6
101	1
102	5
103	1
104	11
105	1
106	5

n	a(n)
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	5
13	1
14	1
15	1
16	2
17	1
18	2
19	1
20	1
21	1
22	5
23	1
24	1
25	2
26	1
27	3
28	3
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	3
40	1
41	1
42	7
43	1
44	1
45	5
46	1
47	1
48	11
49	4
50	4
51	1
52	1
53	1
54	7
55	1
56	7
57	1
58	1
59	1
60	1
61	1
62	7
63	1
64	14
65	1
66	5
67	1
68	13
69	7
70	5
71	1
72	2
73	1
74	1
75	11
76	1
77	7
78	1
79	1
80	5
81	8
82	13
83	1
84	1
85	1
86	1
87	7
88	1
89	1
90	1
91	3
92	1
93	1
94	5
95	7
96	1
97	1
98	4
99	5
100	6
101	1
102	5
103	1
104	11
105	1
106	5

n	a(n)
2	1
3	1
4	2
5	1
6	1
7	1
8	2
9	2
10	1
11	1
12	5
13	1
14	1
15	1
16	2
17	1
18	2
19	1
20	1
21	1
22	5
23	1
24	1
25	2
26	1
27	3
28	3
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	1
39	3
40	1
41	1
42	7
43	1
44	1
45	5
46	1
47	1
48	11
49	4
50	4
51	1
52	1
53	1
54	7
55	1
56	7
57	1
58	1
59	1
60	1
61	1
62	7
63	1
64	14
65	1
66	5
67	1
68	13
69	7
70	5
71	1
72	2
73	1
74	1
75	11
76	1
77	7
78	1
79	1
80	5
81	8
82	13
83	1
84	1
85	1
86	1
87	7
88	1
89	1
90	1
91	3
92	1
93	1
94	5
95	7
96	1
97	1
98	4
99	5
100	6
101	1
102	5
103	1
104	11
105	1
106	5