A309947 - cp's OEIS frontend

A309947 a(n) = A309891(A025487(n)): For each prime signature, gives the sum of the number of trailing zeros for all bases b >= 2 for some number m with that prime signature. The prime signatures are chosen in order in which they are first seen in the positive integers.

n	a(n)
1	0
2	1
3	3
4	3
5	5
6	6
7	8
8	9
9	7
10	10
11	11
12	13
13	12
14	14
15	15
16	16
17	17
18	16
19	21
20	20
21	21
22	15
23	21
24	23
25	20
26	25
27	27
28	24
29	24
30	28
31	28
32	23
33	32
34	36
35	29
36	33
37	33
38	33
39	35
40	27
41	37
42	36
43	38
44	38
45	43
46	33
47	43
48	42
49	43
50	40
51	29
52	48
53	43
54	31
55	51
56	44
57	53
58	38
59	52
60	47
61	57
62	47
63	35
64	57
65	48
66	48
67	66
68	55
69	57

[0, 1, 3, 3, 5, 6, 8, 9, 7, 10, 11, 13, 12, 14, 15, 16, 17, 16, 21, 20, 21, 15, 21, 23, 20, 25, 27, 24, 24, 28, 28, 23, 32, 36, 29, 33, 33, 33, 35, 27, 37, 36, 38, 38, 43, 33, 43, 42, 43, 40, 29, 48, 43, 31, 51, 44, 53, 38, 52, 47, 57, 47, 35, 57, 48, 48, 66, 55, 57]

cp's OEIS Frontend

A309947 a(n) = A309891(A025487(n)): For each prime signature, gives the sum of the number of trailing zeros for all bases b >= 2 for some number m with that prime signature. The prime signatures are chosen in order in which they are first seen in the positive integers.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	3
5	5
6	6
7	8
8	9
9	7
10	10
11	11
12	13
13	12
14	14
15	15
16	16
17	17
18	16
19	21
20	20
21	21
22	15
23	21
24	23
25	20
26	25
27	27
28	24
29	24
30	28
31	28
32	23
33	32
34	36
35	29
36	33
37	33
38	33
39	35
40	27
41	37
42	36
43	38
44	38
45	43
46	33
47	43
48	42
49	43
50	40
51	29
52	48
53	43
54	31
55	51
56	44
57	53
58	38
59	52
60	47
61	57
62	47
63	35
64	57
65	48
66	48
67	66
68	55
69	57

n	a(n)
1	0
2	1
3	3
4	3
5	5
6	6
7	8
8	9
9	7
10	10
11	11
12	13
13	12
14	14
15	15
16	16
17	17
18	16
19	21
20	20
21	21
22	15
23	21
24	23
25	20
26	25
27	27
28	24
29	24
30	28
31	28
32	23
33	32
34	36
35	29
36	33
37	33
38	33
39	35
40	27
41	37
42	36
43	38
44	38
45	43
46	33
47	43
48	42
49	43
50	40
51	29
52	48
53	43
54	31
55	51
56	44
57	53
58	38
59	52
60	47
61	57
62	47
63	35
64	57
65	48
66	48
67	66
68	55
69	57

n	a(n)
1	0
2	1
3	3
4	3
5	5
6	6
7	8
8	9
9	7
10	10
11	11
12	13
13	12
14	14
15	15
16	16
17	17
18	16
19	21
20	20
21	21
22	15
23	21
24	23
25	20
26	25
27	27
28	24
29	24
30	28
31	28
32	23
33	32
34	36
35	29
36	33
37	33
38	33
39	35
40	27
41	37
42	36
43	38
44	38
45	43
46	33
47	43
48	42
49	43
50	40
51	29
52	48
53	43
54	31
55	51
56	44
57	53
58	38
59	52
60	47
61	57
62	47
63	35
64	57
65	48
66	48
67	66
68	55
69	57