A053048 - cp's OEIS frontend

A053048 a(n) is the number of terminal iterations applied to powers of 2 arising in the iterations of the Euler phi function with initial value n!.

n	a(n)
1	0
2	1
3	1
4	3
5	5
6	6
7	7
8	10
9	10
10	13
11	16
12	18
13	20
14	22
15	24
16	28
17	32
18	33
19	34
20	38
21	39
22	43
23	47
24	50
25	54
26	57
27	57
28	60
29	63
30	66
31	69
32	74
33	77
34	82
35	85
36	87
37	89
38	91
39	93
40	98
41	103
42	105
43	107
44	112
45	114
46	119
47	124
48	128
49	130
50	135
51	139
52	143
53	147
54	148
55	153
56	157
57	158
58	162
59	166
60	170
61	174
62	178
63	179

[0, 1, 1, 3, 5, 6, 7, 10, 10, 13, 16, 18, 20, 22, 24, 28, 32, 33, 34, 38, 39, 43, 47, 50, 54, 57, 57, 60, 63, 66, 69, 74, 77, 82, 85, 87, 89, 91, 93, 98, 103, 105, 107, 112, 114, 119, 124, 128, 130, 135, 139, 143, 147, 148, 153, 157, 158, 162, 166, 170, 174, 178, 179]

cp's OEIS Frontend

A053048 a(n) is the number of terminal iterations applied to powers of 2 arising in the iterations of the Euler phi function with initial value n!.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	3
5	5
6	6
7	7
8	10
9	10
10	13
11	16
12	18
13	20
14	22
15	24
16	28
17	32
18	33
19	34
20	38
21	39
22	43
23	47
24	50
25	54
26	57
27	57
28	60
29	63
30	66
31	69
32	74
33	77
34	82
35	85
36	87
37	89
38	91
39	93
40	98
41	103
42	105
43	107
44	112
45	114
46	119
47	124
48	128
49	130
50	135
51	139
52	143
53	147
54	148
55	153
56	157
57	158
58	162
59	166
60	170
61	174
62	178
63	179

n	a(n)
1	0
2	1
3	1
4	3
5	5
6	6
7	7
8	10
9	10
10	13
11	16
12	18
13	20
14	22
15	24
16	28
17	32
18	33
19	34
20	38
21	39
22	43
23	47
24	50
25	54
26	57
27	57
28	60
29	63
30	66
31	69
32	74
33	77
34	82
35	85
36	87
37	89
38	91
39	93
40	98
41	103
42	105
43	107
44	112
45	114
46	119
47	124
48	128
49	130
50	135
51	139
52	143
53	147
54	148
55	153
56	157
57	158
58	162
59	166
60	170
61	174
62	178
63	179

n	a(n)
1	0
2	1
3	1
4	3
5	5
6	6
7	7
8	10
9	10
10	13
11	16
12	18
13	20
14	22
15	24
16	28
17	32
18	33
19	34
20	38
21	39
22	43
23	47
24	50
25	54
26	57
27	57
28	60
29	63
30	66
31	69
32	74
33	77
34	82
35	85
36	87
37	89
38	91
39	93
40	98
41	103
42	105
43	107
44	112
45	114
46	119
47	124
48	128
49	130
50	135
51	139
52	143
53	147
54	148
55	153
56	157
57	158
58	162
59	166
60	170
61	174
62	178
63	179