A338669 - cp's OEIS frontend

A338669 The prime tower factorization of a(n) is obtained by replacing the rightmost prime number by 1 in the prime tower factorization of n; a(1) = 1.

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

[1, 1, 1, 2, 1, 2, 1, 2, 3, 2, 1, 4, 1, 2, 3, 4, 1, 6, 1, 4, 3, 2, 1, 8, 5, 2, 3, 4, 1, 6, 1, 2, 3, 2, 5, 12, 1, 2, 3, 8, 1, 6, 1, 4, 9, 2, 1, 16, 7, 10, 3, 4, 1, 6, 5, 8, 3, 2, 1, 12, 1, 2, 9, 4, 5, 6, 1, 4, 3, 10, 1, 24, 1, 2, 15, 4, 7, 6, 1, 16, 9, 2, 1, 12]

cp's OEIS Frontend

A338669 The prime tower factorization of a(n) is obtained by replacing the rightmost prime number by 1 in the prime tower factorization of n; a(1) = 1.

Table of values

List of values

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

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

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