A381962 - cp's OEIS frontend

A381962 Irregular triangle read by rows, where row n lists the iterates of f(x), starting at x = n until f(x) <= 1, where f(x) is the Hamming weight of x (A000120).

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

[0, 1, 2, 1, 3, 2, 1, 4, 1, 5, 2, 1, 6, 2, 1, 7, 3, 2, 1, 8, 1, 9, 2, 1, 10, 2, 1, 11, 3, 2, 1, 12, 2, 1, 13, 3, 2, 1, 14, 3, 2, 1, 15, 4, 1, 16, 1, 17, 2, 1, 18, 2, 1, 19, 3, 2, 1, 20, 2, 1, 21, 3, 2, 1, 22, 3, 2, 1, 23, 4, 1, 24, 2, 1, 25, 3, 2, 1, 26, 3, 2, 1]

cp's OEIS Frontend

A381962 Irregular triangle read by rows, where row n lists the iterates of f(x), starting at x = n until f(x) <= 1, where f(x) is the Hamming weight of x (A000120).

Table of values

List of values

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

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

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