A087253 - cp's OEIS frontend

A087253 Number of distinct initial values of various 3x+1 trajectories of which the peak-value equals 4n.

n	a(n)
1	1
2	1
3	0
4	6
5	1
6	1
7	0
8	1
9	0
10	3
11	0
12	1
13	12
14	1
15	0
16	3
17	1
18	1
19	0
20	1
21	1
22	8
23	0
24	1
25	3
26	1
27	0
28	3
29	1
30	0
31	0
32	1
33	1
34	3
35	0
36	1
37	3
38	1
39	0
40	13
41	0
42	1
43	0
44	1
45	1
46	3
47	0
48	1
49	8
50	1
51	0
52	3
53	1
54	0
55	0
56	1
57	1
58	6
59	0
60	1
61	3
62	0
63	0
64	3
65	1
66	1
67	0
68	1
69	1
70	3
71	0
72	1
73	0
74	1
75	0
76	14
77	1
78	1
79	0
80	1
81	1
82	0
83	0
84	1
85	6
86	1
87	0
88	3
89	1
90	1
91	0
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	3
101	1
102	1
103	0
104	1
105	0

[1, 1, 0, 6, 1, 1, 0, 1, 0, 3, 0, 1, 12, 1, 0, 3, 1, 1, 0, 1, 1, 8, 0, 1, 3, 1, 0, 3, 1, 0, 0, 1, 1, 3, 0, 1, 3, 1, 0, 13, 0, 1, 0, 1, 1, 3, 0, 1, 8, 1, 0, 3, 1, 0, 0, 1, 1, 6, 0, 1, 3, 0, 0, 3, 1, 1, 0, 1, 1, 3, 0, 1, 0, 1, 0, 14, 1, 1, 0, 1, 1, 0, 0, 1, 6, 1, 0, 3, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 3, 1, 1, 0, 1, 0]

cp's OEIS Frontend

A087253 Number of distinct initial values of various 3x+1 trajectories of which the peak-value equals 4n.

Table of values

List of values

n	a(n)
1	1
2	1
3	0
4	6
5	1
6	1
7	0
8	1
9	0
10	3
11	0
12	1
13	12
14	1
15	0
16	3
17	1
18	1
19	0
20	1
21	1
22	8
23	0
24	1
25	3
26	1
27	0
28	3
29	1
30	0
31	0
32	1
33	1
34	3
35	0
36	1
37	3
38	1
39	0
40	13
41	0
42	1
43	0
44	1
45	1
46	3
47	0
48	1
49	8
50	1
51	0
52	3
53	1
54	0
55	0
56	1
57	1
58	6
59	0
60	1
61	3
62	0
63	0
64	3
65	1
66	1
67	0
68	1
69	1
70	3
71	0
72	1
73	0
74	1
75	0
76	14
77	1
78	1
79	0
80	1
81	1
82	0
83	0
84	1
85	6
86	1
87	0
88	3
89	1
90	1
91	0
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	3
101	1
102	1
103	0
104	1
105	0

n	a(n)
1	1
2	1
3	0
4	6
5	1
6	1
7	0
8	1
9	0
10	3
11	0
12	1
13	12
14	1
15	0
16	3
17	1
18	1
19	0
20	1
21	1
22	8
23	0
24	1
25	3
26	1
27	0
28	3
29	1
30	0
31	0
32	1
33	1
34	3
35	0
36	1
37	3
38	1
39	0
40	13
41	0
42	1
43	0
44	1
45	1
46	3
47	0
48	1
49	8
50	1
51	0
52	3
53	1
54	0
55	0
56	1
57	1
58	6
59	0
60	1
61	3
62	0
63	0
64	3
65	1
66	1
67	0
68	1
69	1
70	3
71	0
72	1
73	0
74	1
75	0
76	14
77	1
78	1
79	0
80	1
81	1
82	0
83	0
84	1
85	6
86	1
87	0
88	3
89	1
90	1
91	0
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	3
101	1
102	1
103	0
104	1
105	0

n	a(n)
1	1
2	1
3	0
4	6
5	1
6	1
7	0
8	1
9	0
10	3
11	0
12	1
13	12
14	1
15	0
16	3
17	1
18	1
19	0
20	1
21	1
22	8
23	0
24	1
25	3
26	1
27	0
28	3
29	1
30	0
31	0
32	1
33	1
34	3
35	0
36	1
37	3
38	1
39	0
40	13
41	0
42	1
43	0
44	1
45	1
46	3
47	0
48	1
49	8
50	1
51	0
52	3
53	1
54	0
55	0
56	1
57	1
58	6
59	0
60	1
61	3
62	0
63	0
64	3
65	1
66	1
67	0
68	1
69	1
70	3
71	0
72	1
73	0
74	1
75	0
76	14
77	1
78	1
79	0
80	1
81	1
82	0
83	0
84	1
85	6
86	1
87	0
88	3
89	1
90	1
91	0
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	3
101	1
102	1
103	0
104	1
105	0