A356515 - cp's OEIS frontend

A356515 For any n >= 0, let x_n(1) = n, and for any b > 1, x_n(b) is the sum of digits of x_n(b-1) in base b; x_n is eventually constant, with value a(n).

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

[0, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 3, 2, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 3, 2, 1, 1, 2, 1, 2, 2]

cp's OEIS Frontend

A356515 For any n >= 0, let x_n(1) = n, and for any b > 1, x_n(b) is the sum of digits of x_n(b-1) in base b; x_n is eventually constant, with value a(n).

Table of values

List of values

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

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

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