A099645 - cp's OEIS frontend

A099645 Number of iterations until n reaches a number in A039943 under "x goes to sum of squares of digits of x" map.

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

[0, 1, 5, 0, 4, 9, 5, 5, 4, 1, 2, 5, 2, 6, 3, 0, 5, 3, 4, 0, 5, 6, 3, 1, 3, 2, 6, 3, 2, 5, 2, 3, 4, 4, 5, 8, 0, 2, 5, 1, 6, 0, 4, 4, 7, 4, 3, 6, 4, 4, 3, 3, 5, 7, 5, 2, 4, 0, 2, 9, 1, 2, 8, 4, 2, 7, 2, 2, 5, 5, 5, 6, 1, 3, 4, 2, 2, 4, 3, 5, 3, 3, 2, 6, 1, 2, 4, 7, 0, 4, 4, 2, 5, 4, 2, 5, 3, 1, 8, 1, 2, 5, 2, 6, 3]

cp's OEIS Frontend

A099645 Number of iterations until n reaches a number in A039943 under "x goes to sum of squares of digits of x" map.

Table of values

List of values

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

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

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