A098220 - cp's OEIS frontend

A098220 a(n) = floor(sigma(sigma(p))/p) = floor(sigma(p+1)/p) = floor(A008333(n)/p), where p is the n-th prime number.

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

[2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 3, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 3, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 1, 2, 2, 2, 3, 2, 1, 2, 2, 2, 1, 2, 1, 3, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 3, 1, 2, 2, 3, 2, 2, 1, 1, 1, 2, 2, 2, 2]

cp's OEIS Frontend

A098220 a(n) = floor(sigma(sigma(p))/p) = floor(sigma(p+1)/p) = floor(A008333(n)/p), where p is the n-th prime number.

Table of values

List of values

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

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

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