A171250 - cp's OEIS frontend

A171250 Row lengths of A082381: number of iterations of "sum of digits squared" until 1 or 4 is reached.

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

[1, 1, 11, 1, 8, 13, 5, 9, 10, 1, 2, 9, 2, 10, 10, 7, 9, 9, 4, 1, 9, 10, 3, 2, 7, 9, 10, 3, 6, 11, 2, 3, 10, 8, 9, 12, 6, 7, 11, 8, 10, 2, 8, 4, 11, 8, 9, 10, 4, 8, 10, 7, 9, 11, 9, 8, 10, 5, 8, 13, 7, 9, 12, 8, 8, 11, 6, 2, 12, 5, 9, 10, 6, 9, 10, 6, 5, 4, 3, 9, 9, 3, 7, 10, 5, 2, 4, 14, 4, 10, 4, 6, 11, 4, 8, 12, 3, 4, 12, 1]

cp's OEIS Frontend

A171250 Row lengths of A082381: number of iterations of "sum of digits squared" until 1 or 4 is reached.

Table of values

List of values

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

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

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