A320105 - cp's OEIS frontend

A320105 If A001222(n) <= 2, a(n) = 1, otherwise, a(n) = Sum_{p|n} Sum_{q|n, q>=(p+[p^2 does not divide n])} a(prime(primepi(p)primepi(q)) (n/(p*q))), where p and q range over distinct primes dividing n. (See formula section for exact details.)

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 3, 1, 1, 1, 1, 1, 6, 1, 1, 1, 4, 1, 3, 1, 2, 2, 1, 1, 8, 1, 2, 1, 2, 1, 4, 1, 4, 1, 1, 1, 11, 1, 1, 2, 1, 1, 3, 1, 2, 1, 3, 1, 16, 1, 1, 2, 2, 1, 3, 1, 8, 2, 1, 1, 11, 1, 1, 1, 4, 1, 10, 1, 2, 1, 1, 1, 16, 1, 2, 2, 6, 1, 3, 1, 4, 3]

cp's OEIS Frontend

A320105 If A001222(n) <= 2, a(n) = 1, otherwise, a(n) = Sum_{p|n} Sum_{q|n, q>=(p+[p^2 does not divide n])} a(prime(primepi(p)primepi(q)) (n/(p*q))), where p and q range over distinct primes dividing n. (See formula section for exact details.)

Table of values

List of values

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

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

cp's OEIS Frontend

A320105 If A001222(n) <= 2, a(n) = 1, otherwise, a(n) = Sum_{p|n} Sum_{q|n, q>=(p+[p^2 does not divide n])} a(prime(primepi(p)*primepi(q)) * (n/(p*q))), where p and q range over distinct primes dividing n. (See formula section for exact details.)

Table of values

List of values

A320105 If A001222(n) <= 2, a(n) = 1, otherwise, a(n) = Sum_{p|n} Sum_{q|n, q>=(p+[p^2 does not divide n])} a(prime(primepi(p)primepi(q)) (n/(p*q))), where p and q range over distinct primes dividing n. (See formula section for exact details.)

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