A351089 - cp's OEIS frontend

A351089 Number of iterations of map x -> A003415(x) needed to reach a number >= A276086(n), when starting from x = n, or -1 if such number is never reached.

n	a(n)
0	-1
1	-1
2	-1
3	-1
4	-1
5	-1
6	0
7	-1
8	2
9	-1
10	-1
11	-1
12	2
13	-1
14	-1
15	6
16	4
17	-1
18	-1
19	-1
20	6
21	-1
22	-1
23	-1
24	6
25	-1
26	11
27	-1
28	8
29	-1
30	0
31	0
32	0
33	-1
34	-1
35	5
36	0
37	-1
38	-1
39	5
40	7
41	-1
42	-1
43	-1
44	4
45	8
46	-1
47	-1
48	4
49	-1
50	10
51	10
52	8
53	-1
54	7
55	10
56	8
57	-1
58	-1
59	-1
60	0
61	-1
62	-1
63	8
64	2
65	-1
66	-1
67	-1
68	6
69	11
70	-1
71	-1
72	6
73	-1
74	10
75	10
76	8
77	-1
78	-1
79	-1
80	7
81	9
82	-1
83	-1
84	7
85	-1
86	14
87	11
88	9

[-1, -1, -1, -1, -1, -1, 0, -1, 2, -1, -1, -1, 2, -1, -1, 6, 4, -1, -1, -1, 6, -1, -1, -1, 6, -1, 11, -1, 8, -1, 0, 0, 0, -1, -1, 5, 0, -1, -1, 5, 7, -1, -1, -1, 4, 8, -1, -1, 4, -1, 10, 10, 8, -1, 7, 10, 8, -1, -1, -1, 0, -1, -1, 8, 2, -1, -1, -1, 6, 11, -1, -1, 6, -1, 10, 10, 8, -1, -1, -1, 7, 9, -1, -1, 7, -1, 14, 11, 9]

cp's OEIS Frontend

A351089 Number of iterations of map x -> A003415(x) needed to reach a number >= A276086(n), when starting from x = n, or -1 if such number is never reached.

Table of values

List of values

n	a(n)
0	-1
1	-1
2	-1
3	-1
4	-1
5	-1
6	0
7	-1
8	2
9	-1
10	-1
11	-1
12	2
13	-1
14	-1
15	6
16	4
17	-1
18	-1
19	-1
20	6
21	-1
22	-1
23	-1
24	6
25	-1
26	11
27	-1
28	8
29	-1
30	0
31	0
32	0
33	-1
34	-1
35	5
36	0
37	-1
38	-1
39	5
40	7
41	-1
42	-1
43	-1
44	4
45	8
46	-1
47	-1
48	4
49	-1
50	10
51	10
52	8
53	-1
54	7
55	10
56	8
57	-1
58	-1
59	-1
60	0
61	-1
62	-1
63	8
64	2
65	-1
66	-1
67	-1
68	6
69	11
70	-1
71	-1
72	6
73	-1
74	10
75	10
76	8
77	-1
78	-1
79	-1
80	7
81	9
82	-1
83	-1
84	7
85	-1
86	14
87	11
88	9

n	a(n)
0	-1
1	-1
2	-1
3	-1
4	-1
5	-1
6	0
7	-1
8	2
9	-1
10	-1
11	-1
12	2
13	-1
14	-1
15	6
16	4
17	-1
18	-1
19	-1
20	6
21	-1
22	-1
23	-1
24	6
25	-1
26	11
27	-1
28	8
29	-1
30	0
31	0
32	0
33	-1
34	-1
35	5
36	0
37	-1
38	-1
39	5
40	7
41	-1
42	-1
43	-1
44	4
45	8
46	-1
47	-1
48	4
49	-1
50	10
51	10
52	8
53	-1
54	7
55	10
56	8
57	-1
58	-1
59	-1
60	0
61	-1
62	-1
63	8
64	2
65	-1
66	-1
67	-1
68	6
69	11
70	-1
71	-1
72	6
73	-1
74	10
75	10
76	8
77	-1
78	-1
79	-1
80	7
81	9
82	-1
83	-1
84	7
85	-1
86	14
87	11
88	9

n	a(n)
0	-1
1	-1
2	-1
3	-1
4	-1
5	-1
6	0
7	-1
8	2
9	-1
10	-1
11	-1
12	2
13	-1
14	-1
15	6
16	4
17	-1
18	-1
19	-1
20	6
21	-1
22	-1
23	-1
24	6
25	-1
26	11
27	-1
28	8
29	-1
30	0
31	0
32	0
33	-1
34	-1
35	5
36	0
37	-1
38	-1
39	5
40	7
41	-1
42	-1
43	-1
44	4
45	8
46	-1
47	-1
48	4
49	-1
50	10
51	10
52	8
53	-1
54	7
55	10
56	8
57	-1
58	-1
59	-1
60	0
61	-1
62	-1
63	8
64	2
65	-1
66	-1
67	-1
68	6
69	11
70	-1
71	-1
72	6
73	-1
74	10
75	10
76	8
77	-1
78	-1
79	-1
80	7
81	9
82	-1
83	-1
84	7
85	-1
86	14
87	11
88	9