A380435 - cp's OEIS frontend

A380435 Erase digit 0 from decimal expansion of n. Then repeatedly apply the number of divisor function (A000005) onto each digit until a stationary value is reached. a(n) is the final stationary value (if it is reached for all digits).

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

[1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 11, 12, 12, 12, 12, 12, 12, 12, 12, 2, 21, 22, 22, 22, 22, 22, 22, 22, 22, 2, 21, 22, 22, 22, 22, 22, 22, 22, 22, 2, 21, 22, 22, 22, 22, 22, 22, 22, 22, 2, 21, 22, 22, 22, 22, 22, 22, 22, 22, 2, 21, 22, 22, 22, 22, 22, 22, 22, 22, 2, 21, 22, 22, 22, 22, 22]

cp's OEIS Frontend

A380435 Erase digit 0 from decimal expansion of n. Then repeatedly apply the number of divisor function (A000005) onto each digit until a stationary value is reached. a(n) is the final stationary value (if it is reached for all digits).

Table of values

List of values

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

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

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