A113901 - cp's OEIS frontend

A113901 Product of omega(n) and bigomega(n) = A001221(n)*A001222(n), where omega(x): number of distinct prime divisors of x. bigomega(x): number of prime divisors of x, counted with multiplicity.

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	3
9	2
10	4
11	1
12	6
13	1
14	4
15	4
16	4
17	1
18	6
19	1
20	6
21	4
22	4
23	1
24	8
25	2
26	4
27	3
28	6
29	1
30	9
31	1
32	5
33	4
34	4
35	4
36	8
37	1
38	4
39	4
40	8
41	1
42	9
43	1
44	6
45	6
46	4
47	1
48	10
49	2
50	6
51	4
52	6
53	1
54	8
55	4
56	8
57	4
58	4
59	1
60	12
61	1
62	4
63	6
64	6
65	4
66	9
67	1
68	6
69	4
70	9
71	1
72	10
73	1
74	4
75	6
76	6
77	4
78	9
79	1
80	10
81	4
82	4
83	1
84	12
85	4
86	4
87	4
88	8
89	1
90	12
91	4
92	6
93	4
94	4
95	4
96	12
97	1
98	6
99	6
100	8
101	1
102	9

[0, 1, 1, 2, 1, 4, 1, 3, 2, 4, 1, 6, 1, 4, 4, 4, 1, 6, 1, 6, 4, 4, 1, 8, 2, 4, 3, 6, 1, 9, 1, 5, 4, 4, 4, 8, 1, 4, 4, 8, 1, 9, 1, 6, 6, 4, 1, 10, 2, 6, 4, 6, 1, 8, 4, 8, 4, 4, 1, 12, 1, 4, 6, 6, 4, 9, 1, 6, 4, 9, 1, 10, 1, 4, 6, 6, 4, 9, 1, 10, 4, 4, 1, 12, 4, 4, 4, 8, 1, 12, 4, 6, 4, 4, 4, 12, 1, 6, 6, 8, 1, 9]

cp's OEIS Frontend

A113901 Product of omega(n) and bigomega(n) = A001221(n)*A001222(n), where omega(x): number of distinct prime divisors of x. bigomega(x): number of prime divisors of x, counted with multiplicity.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	3
9	2
10	4
11	1
12	6
13	1
14	4
15	4
16	4
17	1
18	6
19	1
20	6
21	4
22	4
23	1
24	8
25	2
26	4
27	3
28	6
29	1
30	9
31	1
32	5
33	4
34	4
35	4
36	8
37	1
38	4
39	4
40	8
41	1
42	9
43	1
44	6
45	6
46	4
47	1
48	10
49	2
50	6
51	4
52	6
53	1
54	8
55	4
56	8
57	4
58	4
59	1
60	12
61	1
62	4
63	6
64	6
65	4
66	9
67	1
68	6
69	4
70	9
71	1
72	10
73	1
74	4
75	6
76	6
77	4
78	9
79	1
80	10
81	4
82	4
83	1
84	12
85	4
86	4
87	4
88	8
89	1
90	12
91	4
92	6
93	4
94	4
95	4
96	12
97	1
98	6
99	6
100	8
101	1
102	9

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	3
9	2
10	4
11	1
12	6
13	1
14	4
15	4
16	4
17	1
18	6
19	1
20	6
21	4
22	4
23	1
24	8
25	2
26	4
27	3
28	6
29	1
30	9
31	1
32	5
33	4
34	4
35	4
36	8
37	1
38	4
39	4
40	8
41	1
42	9
43	1
44	6
45	6
46	4
47	1
48	10
49	2
50	6
51	4
52	6
53	1
54	8
55	4
56	8
57	4
58	4
59	1
60	12
61	1
62	4
63	6
64	6
65	4
66	9
67	1
68	6
69	4
70	9
71	1
72	10
73	1
74	4
75	6
76	6
77	4
78	9
79	1
80	10
81	4
82	4
83	1
84	12
85	4
86	4
87	4
88	8
89	1
90	12
91	4
92	6
93	4
94	4
95	4
96	12
97	1
98	6
99	6
100	8
101	1
102	9

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	3
9	2
10	4
11	1
12	6
13	1
14	4
15	4
16	4
17	1
18	6
19	1
20	6
21	4
22	4
23	1
24	8
25	2
26	4
27	3
28	6
29	1
30	9
31	1
32	5
33	4
34	4
35	4
36	8
37	1
38	4
39	4
40	8
41	1
42	9
43	1
44	6
45	6
46	4
47	1
48	10
49	2
50	6
51	4
52	6
53	1
54	8
55	4
56	8
57	4
58	4
59	1
60	12
61	1
62	4
63	6
64	6
65	4
66	9
67	1
68	6
69	4
70	9
71	1
72	10
73	1
74	4
75	6
76	6
77	4
78	9
79	1
80	10
81	4
82	4
83	1
84	12
85	4
86	4
87	4
88	8
89	1
90	12
91	4
92	6
93	4
94	4
95	4
96	12
97	1
98	6
99	6
100	8
101	1
102	9