A055597 - cp's OEIS frontend

A055597 Exponent of the highest power of 2 dividing phi(n!).

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

[0, 0, 1, 3, 5, 6, 7, 10, 10, 11, 12, 14, 16, 17, 17, 21, 25, 26, 27, 29, 29, 30, 31, 34, 34, 35, 35, 37, 39, 40, 41, 46, 46, 47, 47, 49, 51, 52, 52, 55, 58, 59, 60, 62, 62, 63, 64, 68, 68, 69, 69, 71, 73, 74, 74, 77, 77, 78, 79, 81, 83, 84, 84, 90, 90, 91, 92, 94, 94, 95, 96]

cp's OEIS Frontend

A055597 Exponent of the highest power of 2 dividing phi(n!).

Table of values

List of values

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

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

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