A068903 - cp's OEIS frontend

A068903 Binomial(tau(n),omega(n)), where tau(n) is the number of divisors of n (A000005) and omega the number of distinct prime factors (A001221).

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	6
7	2
8	4
9	3
10	6
11	2
12	15
13	2
14	6
15	6
16	5
17	2
18	15
19	2
20	15
21	6
22	6
23	2
24	28
25	3
26	6
27	4
28	15
29	2
30	56
31	2
32	6
33	6
34	6
35	6
36	36
37	2
38	6
39	6
40	28
41	2
42	56
43	2
44	15
45	15
46	6
47	2
48	45
49	3
50	15
51	6
52	15
53	2
54	28
55	6
56	28
57	6
58	6
59	2
60	220
61	2
62	6
63	15
64	7
65	6
66	56
67	2
68	15
69	6
70	56
71	2
72	66
73	2
74	6
75	15
76	15
77	6
78	56

[1, 2, 2, 3, 2, 6, 2, 4, 3, 6, 2, 15, 2, 6, 6, 5, 2, 15, 2, 15, 6, 6, 2, 28, 3, 6, 4, 15, 2, 56, 2, 6, 6, 6, 6, 36, 2, 6, 6, 28, 2, 56, 2, 15, 15, 6, 2, 45, 3, 15, 6, 15, 2, 28, 6, 28, 6, 6, 2, 220, 2, 6, 15, 7, 6, 56, 2, 15, 6, 56, 2, 66, 2, 6, 15, 15, 6, 56]

cp's OEIS Frontend

A068903 Binomial(tau(n),omega(n)), where tau(n) is the number of divisors of n (A000005) and omega the number of distinct prime factors (A001221).

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	6
7	2
8	4
9	3
10	6
11	2
12	15
13	2
14	6
15	6
16	5
17	2
18	15
19	2
20	15
21	6
22	6
23	2
24	28
25	3
26	6
27	4
28	15
29	2
30	56
31	2
32	6
33	6
34	6
35	6
36	36
37	2
38	6
39	6
40	28
41	2
42	56
43	2
44	15
45	15
46	6
47	2
48	45
49	3
50	15
51	6
52	15
53	2
54	28
55	6
56	28
57	6
58	6
59	2
60	220
61	2
62	6
63	15
64	7
65	6
66	56
67	2
68	15
69	6
70	56
71	2
72	66
73	2
74	6
75	15
76	15
77	6
78	56

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	6
7	2
8	4
9	3
10	6
11	2
12	15
13	2
14	6
15	6
16	5
17	2
18	15
19	2
20	15
21	6
22	6
23	2
24	28
25	3
26	6
27	4
28	15
29	2
30	56
31	2
32	6
33	6
34	6
35	6
36	36
37	2
38	6
39	6
40	28
41	2
42	56
43	2
44	15
45	15
46	6
47	2
48	45
49	3
50	15
51	6
52	15
53	2
54	28
55	6
56	28
57	6
58	6
59	2
60	220
61	2
62	6
63	15
64	7
65	6
66	56
67	2
68	15
69	6
70	56
71	2
72	66
73	2
74	6
75	15
76	15
77	6
78	56

n	a(n)
1	1
2	2
3	2
4	3
5	2
6	6
7	2
8	4
9	3
10	6
11	2
12	15
13	2
14	6
15	6
16	5
17	2
18	15
19	2
20	15
21	6
22	6
23	2
24	28
25	3
26	6
27	4
28	15
29	2
30	56
31	2
32	6
33	6
34	6
35	6
36	36
37	2
38	6
39	6
40	28
41	2
42	56
43	2
44	15
45	15
46	6
47	2
48	45
49	3
50	15
51	6
52	15
53	2
54	28
55	6
56	28
57	6
58	6
59	2
60	220
61	2
62	6
63	15
64	7
65	6
66	56
67	2
68	15
69	6
70	56
71	2
72	66
73	2
74	6
75	15
76	15
77	6
78	56