A224360 - cp's OEIS frontend

A224360 Triangle read by rows: T(n,k) = -1 + length of the Collatz sequence of -(n-k)/(2k+1) for n >= 1 and k >= 0.

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

[0, 1, 1, 4, 2, 4, 2, 0, 5, 9, 4, 3, 7, 10, 4, 5, 3, 6, 11, 5, 8, 4, 1, 0, 11, 1, 9, 14, 3, 6, 8, 13, 6, 8, 15, 4, 11, 4, 9, 12, 3, 10, 5, 5, 17, 4, 4, 7, 0, 2, 11, 16, 4, 18, 36, 6, 4, 14, 12, 4, 9, 16, 6, 9, 37, 13, 6, 5, 1, 16, 7, 13, 6, 1, 19, 16, 14, 7, 9]

cp's OEIS Frontend

A224360 Triangle read by rows: T(n,k) = -1 + length of the Collatz sequence of -(n-k)/(2k+1) for n >= 1 and k >= 0.

Table of values

List of values

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

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

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