A123390 - cp's OEIS frontend

A123390 Triangle read by rows: n-th row starts with n and continues with half the previous value as long as that is even.

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

[1, 2, 1, 3, 4, 2, 1, 5, 6, 3, 7, 8, 4, 2, 1, 9, 10, 5, 11, 12, 6, 3, 13, 14, 7, 15, 16, 8, 4, 2, 1, 17, 18, 9, 19, 20, 10, 5, 21, 22, 11, 23, 24, 12, 6, 3, 25, 26, 13, 27, 28, 14, 7, 29, 30, 15, 31, 32, 16, 8, 4, 2, 1, 33, 34, 17, 35, 36, 18, 9, 37, 38, 19, 39, 40, 20, 10, 5, 41, 42, 21]

cp's OEIS Frontend

A123390 Triangle read by rows: n-th row starts with n and continues with half the previous value as long as that is even.

Table of values

List of values

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

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

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