A275732 - cp's OEIS frontend

A275732 One-based positions of 1-digits in the factorial base representation of n are converted to primes with those indices, then multiplied together.

n	a(n)
0	1
1	2
2	3
3	6
4	1
5	2
6	5
7	10
8	15
9	30
10	5
11	10
12	1
13	2
14	3
15	6
16	1
17	2
18	1
19	2
20	3
21	6
22	1
23	2
24	7
25	14
26	21
27	42
28	7
29	14
30	35
31	70
32	105
33	210
34	35
35	70
36	7
37	14
38	21
39	42
40	7
41	14
42	7
43	14
44	21
45	42
46	7
47	14
48	1
49	2
50	3
51	6
52	1
53	2
54	5
55	10
56	15
57	30
58	5
59	10
60	1
61	2
62	3
63	6
64	1
65	2
66	1
67	2
68	3
69	6
70	1
71	2
72	1
73	2
74	3
75	6
76	1
77	2
78	5
79	10
80	15
81	30
82	5
83	10
84	1
85	2
86	3
87	6
88	1
89	2
90	1
91	2
92	3
93	6
94	1
95	2
96	1
97	2
98	3
99	6
100	1
101	2
102	5
103	10
104	15
105	30

[1, 2, 3, 6, 1, 2, 5, 10, 15, 30, 5, 10, 1, 2, 3, 6, 1, 2, 1, 2, 3, 6, 1, 2, 7, 14, 21, 42, 7, 14, 35, 70, 105, 210, 35, 70, 7, 14, 21, 42, 7, 14, 7, 14, 21, 42, 7, 14, 1, 2, 3, 6, 1, 2, 5, 10, 15, 30, 5, 10, 1, 2, 3, 6, 1, 2, 1, 2, 3, 6, 1, 2, 1, 2, 3, 6, 1, 2, 5, 10, 15, 30, 5, 10, 1, 2, 3, 6, 1, 2, 1, 2, 3, 6, 1, 2, 1, 2, 3, 6, 1, 2, 5, 10, 15, 30]

cp's OEIS Frontend

A275732 One-based positions of 1-digits in the factorial base representation of n are converted to primes with those indices, then multiplied together.

Table of values

List of values

n	a(n)
0	1
1	2
2	3
3	6
4	1
5	2
6	5
7	10
8	15
9	30
10	5
11	10
12	1
13	2
14	3
15	6
16	1
17	2
18	1
19	2
20	3
21	6
22	1
23	2
24	7
25	14
26	21
27	42
28	7
29	14
30	35
31	70
32	105
33	210
34	35
35	70
36	7
37	14
38	21
39	42
40	7
41	14
42	7
43	14
44	21
45	42
46	7
47	14
48	1
49	2
50	3
51	6
52	1
53	2
54	5
55	10
56	15
57	30
58	5
59	10
60	1
61	2
62	3
63	6
64	1
65	2
66	1
67	2
68	3
69	6
70	1
71	2
72	1
73	2
74	3
75	6
76	1
77	2
78	5
79	10
80	15
81	30
82	5
83	10
84	1
85	2
86	3
87	6
88	1
89	2
90	1
91	2
92	3
93	6
94	1
95	2
96	1
97	2
98	3
99	6
100	1
101	2
102	5
103	10
104	15
105	30

n	a(n)
0	1
1	2
2	3
3	6
4	1
5	2
6	5
7	10
8	15
9	30
10	5
11	10
12	1
13	2
14	3
15	6
16	1
17	2
18	1
19	2
20	3
21	6
22	1
23	2
24	7
25	14
26	21
27	42
28	7
29	14
30	35
31	70
32	105
33	210
34	35
35	70
36	7
37	14
38	21
39	42
40	7
41	14
42	7
43	14
44	21
45	42
46	7
47	14
48	1
49	2
50	3
51	6
52	1
53	2
54	5
55	10
56	15
57	30
58	5
59	10
60	1
61	2
62	3
63	6
64	1
65	2
66	1
67	2
68	3
69	6
70	1
71	2
72	1
73	2
74	3
75	6
76	1
77	2
78	5
79	10
80	15
81	30
82	5
83	10
84	1
85	2
86	3
87	6
88	1
89	2
90	1
91	2
92	3
93	6
94	1
95	2
96	1
97	2
98	3
99	6
100	1
101	2
102	5
103	10
104	15
105	30

n	a(n)
0	1
1	2
2	3
3	6
4	1
5	2
6	5
7	10
8	15
9	30
10	5
11	10
12	1
13	2
14	3
15	6
16	1
17	2
18	1
19	2
20	3
21	6
22	1
23	2
24	7
25	14
26	21
27	42
28	7
29	14
30	35
31	70
32	105
33	210
34	35
35	70
36	7
37	14
38	21
39	42
40	7
41	14
42	7
43	14
44	21
45	42
46	7
47	14
48	1
49	2
50	3
51	6
52	1
53	2
54	5
55	10
56	15
57	30
58	5
59	10
60	1
61	2
62	3
63	6
64	1
65	2
66	1
67	2
68	3
69	6
70	1
71	2
72	1
73	2
74	3
75	6
76	1
77	2
78	5
79	10
80	15
81	30
82	5
83	10
84	1
85	2
86	3
87	6
88	1
89	2
90	1
91	2
92	3
93	6
94	1
95	2
96	1
97	2
98	3
99	6
100	1
101	2
102	5
103	10
104	15
105	30