A174987 - cp's OEIS frontend

A174987 Start with n, iterate the map k -> A167507(k) until we reach 3, 4, 5 or 6; a(n) = which of 3, 4, 5 or 6 we reach first.

n	a(n)
1	4
2	4
3	4
4	3
5	4
6	5
7	6
8	4
9	4
10	4
11	3
12	4
13	5
14	6
15	4
16	6
17	5
18	4
19	4
20	4
21	5
22	4
23	4
24	3
25	4
26	4
27	4
28	4
29	4
30	4
31	6
32	3
33	3
34	4
35	5
36	3
37	4
38	3
39	3
40	3
41	4
42	5
43	5
44	6
45	4
46	5
47	4
48	5
49	5
50	5
51	4
52	6
53	6
54	4
55	6
56	6
57	5
58	6
59	6
60	6
61	4
62	5
63	5
64	6
65	4
66	5
67	4
68	5
69	5
70	5
71	4
72	4
73	6
74	4
75	5
76	4
77	6
78	6
79	6
80	6
81	5
82	6
83	6
84	5
85	4
86	6
87	4
88	6
89	6
90	6
91	4
92	6
93	5
94	4
95	4
96	4
97	5
98	4
99	4
100	4

[4, 4, 4, 3, 4, 5, 6, 4, 4, 4, 3, 4, 5, 6, 4, 6, 5, 4, 4, 4, 5, 4, 4, 3, 4, 4, 4, 4, 4, 4, 6, 3, 3, 4, 5, 3, 4, 3, 3, 3, 4, 5, 5, 6, 4, 5, 4, 5, 5, 5, 4, 6, 6, 4, 6, 6, 5, 6, 6, 6, 4, 5, 5, 6, 4, 5, 4, 5, 5, 5, 4, 4, 6, 4, 5, 4, 6, 6, 6, 6, 5, 6, 6, 5, 4, 6, 4, 6, 6, 6, 4, 6, 5, 4, 4, 4, 5, 4, 4, 4]

cp's OEIS Frontend

A174987 Start with n, iterate the map k -> A167507(k) until we reach 3, 4, 5 or 6; a(n) = which of 3, 4, 5 or 6 we reach first.

Table of values

List of values

n	a(n)
1	4
2	4
3	4
4	3
5	4
6	5
7	6
8	4
9	4
10	4
11	3
12	4
13	5
14	6
15	4
16	6
17	5
18	4
19	4
20	4
21	5
22	4
23	4
24	3
25	4
26	4
27	4
28	4
29	4
30	4
31	6
32	3
33	3
34	4
35	5
36	3
37	4
38	3
39	3
40	3
41	4
42	5
43	5
44	6
45	4
46	5
47	4
48	5
49	5
50	5
51	4
52	6
53	6
54	4
55	6
56	6
57	5
58	6
59	6
60	6
61	4
62	5
63	5
64	6
65	4
66	5
67	4
68	5
69	5
70	5
71	4
72	4
73	6
74	4
75	5
76	4
77	6
78	6
79	6
80	6
81	5
82	6
83	6
84	5
85	4
86	6
87	4
88	6
89	6
90	6
91	4
92	6
93	5
94	4
95	4
96	4
97	5
98	4
99	4
100	4

n	a(n)
1	4
2	4
3	4
4	3
5	4
6	5
7	6
8	4
9	4
10	4
11	3
12	4
13	5
14	6
15	4
16	6
17	5
18	4
19	4
20	4
21	5
22	4
23	4
24	3
25	4
26	4
27	4
28	4
29	4
30	4
31	6
32	3
33	3
34	4
35	5
36	3
37	4
38	3
39	3
40	3
41	4
42	5
43	5
44	6
45	4
46	5
47	4
48	5
49	5
50	5
51	4
52	6
53	6
54	4
55	6
56	6
57	5
58	6
59	6
60	6
61	4
62	5
63	5
64	6
65	4
66	5
67	4
68	5
69	5
70	5
71	4
72	4
73	6
74	4
75	5
76	4
77	6
78	6
79	6
80	6
81	5
82	6
83	6
84	5
85	4
86	6
87	4
88	6
89	6
90	6
91	4
92	6
93	5
94	4
95	4
96	4
97	5
98	4
99	4
100	4

n	a(n)
1	4
2	4
3	4
4	3
5	4
6	5
7	6
8	4
9	4
10	4
11	3
12	4
13	5
14	6
15	4
16	6
17	5
18	4
19	4
20	4
21	5
22	4
23	4
24	3
25	4
26	4
27	4
28	4
29	4
30	4
31	6
32	3
33	3
34	4
35	5
36	3
37	4
38	3
39	3
40	3
41	4
42	5
43	5
44	6
45	4
46	5
47	4
48	5
49	5
50	5
51	4
52	6
53	6
54	4
55	6
56	6
57	5
58	6
59	6
60	6
61	4
62	5
63	5
64	6
65	4
66	5
67	4
68	5
69	5
70	5
71	4
72	4
73	6
74	4
75	5
76	4
77	6
78	6
79	6
80	6
81	5
82	6
83	6
84	5
85	4
86	6
87	4
88	6
89	6
90	6
91	4
92	6
93	5
94	4
95	4
96	4
97	5
98	4
99	4
100	4