A100961 - cp's OEIS frontend

A100961 For a decimal string s, let f(s) = decimal string ijk, where i = number of even digits in s, j = number of odd digits in s, k=i+j (see A171797). Start with s = decimal expansion of n; a(n) = number of applications of f needed to reach the string 123.

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

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

cp's OEIS Frontend

A100961 For a decimal string s, let f(s) = decimal string ijk, where i = number of even digits in s, j = number of odd digits in s, k=i+j (see A171797). Start with s = decimal expansion of n; a(n) = number of applications of f needed to reach the string 123.

Table of values

List of values

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

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

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