A052123 - cp's OEIS frontend

A052123 Log_2 of denominators of coefficients in the e.g.f. a(x) such that a(a(x)) = exp(x) - 1.

n	a(n)
0	0
1	0
2	1
3	3
4	0
5	5
6	7
7	7
8	8
9	8
10	12
11	14
12	14
13	15
14	16
15	18
16	18
17	19
18	21
19	24
20	24
21	26
22	28
23	29
24	26
25	27
26	32
27	34
28	35
29	35
30	37
31	36
32	38
33	39
34	40
35	41
36	43
37	46
38	48
39	49
40	47
41	50
42	53
43	55
44	55
45	56
46	58
47	59
48	57
49	56
50	61
51	64
52	64
53	66
54	68
55	70
56	70
57	71
58	73
59	75
60	76
61	76
62	76
63	78
64	78
65	79
66	80
67	82

[0, 0, 1, 3, 0, 5, 7, 7, 8, 8, 12, 14, 14, 15, 16, 18, 18, 19, 21, 24, 24, 26, 28, 29, 26, 27, 32, 34, 35, 35, 37, 36, 38, 39, 40, 41, 43, 46, 48, 49, 47, 50, 53, 55, 55, 56, 58, 59, 57, 56, 61, 64, 64, 66, 68, 70, 70, 71, 73, 75, 76, 76, 76, 78, 78, 79, 80, 82]

cp's OEIS Frontend

A052123 Log_2 of denominators of coefficients in the e.g.f. a(x) such that a(a(x)) = exp(x) - 1.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	3
4	0
5	5
6	7
7	7
8	8
9	8
10	12
11	14
12	14
13	15
14	16
15	18
16	18
17	19
18	21
19	24
20	24
21	26
22	28
23	29
24	26
25	27
26	32
27	34
28	35
29	35
30	37
31	36
32	38
33	39
34	40
35	41
36	43
37	46
38	48
39	49
40	47
41	50
42	53
43	55
44	55
45	56
46	58
47	59
48	57
49	56
50	61
51	64
52	64
53	66
54	68
55	70
56	70
57	71
58	73
59	75
60	76
61	76
62	76
63	78
64	78
65	79
66	80
67	82

n	a(n)
0	0
1	0
2	1
3	3
4	0
5	5
6	7
7	7
8	8
9	8
10	12
11	14
12	14
13	15
14	16
15	18
16	18
17	19
18	21
19	24
20	24
21	26
22	28
23	29
24	26
25	27
26	32
27	34
28	35
29	35
30	37
31	36
32	38
33	39
34	40
35	41
36	43
37	46
38	48
39	49
40	47
41	50
42	53
43	55
44	55
45	56
46	58
47	59
48	57
49	56
50	61
51	64
52	64
53	66
54	68
55	70
56	70
57	71
58	73
59	75
60	76
61	76
62	76
63	78
64	78
65	79
66	80
67	82

n	a(n)
0	0
1	0
2	1
3	3
4	0
5	5
6	7
7	7
8	8
9	8
10	12
11	14
12	14
13	15
14	16
15	18
16	18
17	19
18	21
19	24
20	24
21	26
22	28
23	29
24	26
25	27
26	32
27	34
28	35
29	35
30	37
31	36
32	38
33	39
34	40
35	41
36	43
37	46
38	48
39	49
40	47
41	50
42	53
43	55
44	55
45	56
46	58
47	59
48	57
49	56
50	61
51	64
52	64
53	66
54	68
55	70
56	70
57	71
58	73
59	75
60	76
61	76
62	76
63	78
64	78
65	79
66	80
67	82