A375567 - cp's OEIS frontend

A375567 Length of the "exponential comma sequence" with n as the initial term, or -1 if that sequence is infinite.

n	a(n)
1	-1
2	3
3	4
4	1
5	2
6	3
7	5
8	4
9	4
10	-1
11	5
12	1
13	1
14	4
15	1
16	1
17	1
18	1
19	1
20	6
21	1
22	11
23	4
24	9
25	5
26	1
27	7
28	2
29	3
30	1
31	1
32	1
33	6
34	3
35	1
36	6
37	4
38	1
39	7
40	1
41	3
42	2
43	2
44	1
45	1
46	1
47	2
48	2
49	1
50	2
51	1
52	2
53	2
54	4
55	7
56	2
57	4
58	1
59	2
60	1
61	3
62	2
63	1
64	8
65	3
66	1
67	6
68	2
69	1
70	2
71	2
72	3
73	3
74	4
75	3
76	5
77	1
78	5
79	3
80	2
81	1
82	3
83	2
84	3
85	4
86	3

[-1, 3, 4, 1, 2, 3, 5, 4, 4, -1, 5, 1, 1, 4, 1, 1, 1, 1, 1, 6, 1, 11, 4, 9, 5, 1, 7, 2, 3, 1, 1, 1, 6, 3, 1, 6, 4, 1, 7, 1, 3, 2, 2, 1, 1, 1, 2, 2, 1, 2, 1, 2, 2, 4, 7, 2, 4, 1, 2, 1, 3, 2, 1, 8, 3, 1, 6, 2, 1, 2, 2, 3, 3, 4, 3, 5, 1, 5, 3, 2, 1, 3, 2, 3, 4, 3]

cp's OEIS Frontend

A375567 Length of the "exponential comma sequence" with n as the initial term, or -1 if that sequence is infinite.

Table of values

List of values

n	a(n)
1	-1
2	3
3	4
4	1
5	2
6	3
7	5
8	4
9	4
10	-1
11	5
12	1
13	1
14	4
15	1
16	1
17	1
18	1
19	1
20	6
21	1
22	11
23	4
24	9
25	5
26	1
27	7
28	2
29	3
30	1
31	1
32	1
33	6
34	3
35	1
36	6
37	4
38	1
39	7
40	1
41	3
42	2
43	2
44	1
45	1
46	1
47	2
48	2
49	1
50	2
51	1
52	2
53	2
54	4
55	7
56	2
57	4
58	1
59	2
60	1
61	3
62	2
63	1
64	8
65	3
66	1
67	6
68	2
69	1
70	2
71	2
72	3
73	3
74	4
75	3
76	5
77	1
78	5
79	3
80	2
81	1
82	3
83	2
84	3
85	4
86	3

n	a(n)
1	-1
2	3
3	4
4	1
5	2
6	3
7	5
8	4
9	4
10	-1
11	5
12	1
13	1
14	4
15	1
16	1
17	1
18	1
19	1
20	6
21	1
22	11
23	4
24	9
25	5
26	1
27	7
28	2
29	3
30	1
31	1
32	1
33	6
34	3
35	1
36	6
37	4
38	1
39	7
40	1
41	3
42	2
43	2
44	1
45	1
46	1
47	2
48	2
49	1
50	2
51	1
52	2
53	2
54	4
55	7
56	2
57	4
58	1
59	2
60	1
61	3
62	2
63	1
64	8
65	3
66	1
67	6
68	2
69	1
70	2
71	2
72	3
73	3
74	4
75	3
76	5
77	1
78	5
79	3
80	2
81	1
82	3
83	2
84	3
85	4
86	3

n	a(n)
1	-1
2	3
3	4
4	1
5	2
6	3
7	5
8	4
9	4
10	-1
11	5
12	1
13	1
14	4
15	1
16	1
17	1
18	1
19	1
20	6
21	1
22	11
23	4
24	9
25	5
26	1
27	7
28	2
29	3
30	1
31	1
32	1
33	6
34	3
35	1
36	6
37	4
38	1
39	7
40	1
41	3
42	2
43	2
44	1
45	1
46	1
47	2
48	2
49	1
50	2
51	1
52	2
53	2
54	4
55	7
56	2
57	4
58	1
59	2
60	1
61	3
62	2
63	1
64	8
65	3
66	1
67	6
68	2
69	1
70	2
71	2
72	3
73	3
74	4
75	3
76	5
77	1
78	5
79	3
80	2
81	1
82	3
83	2
84	3
85	4
86	3