A059717 - cp's OEIS frontend

A059717 Start with decimal expansion of n; if all digits have the same parity, stop; otherwise write down the number formed by the even digits and the number formed by the odd digits and add them; repeat.

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

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 11, 3, 13, 5, 15, 7, 17, 9, 19, 20, 3, 22, 5, 24, 7, 26, 9, 28, 11, 3, 31, 5, 33, 7, 35, 9, 37, 11, 39, 40, 5, 42, 7, 44, 9, 46, 11, 48, 13, 5, 51, 7, 53, 9, 55, 11, 57, 13, 59, 60, 7, 62, 9, 64, 11, 66, 13, 68, 15, 7, 71, 9, 73, 11, 75]

cp's OEIS Frontend

A059717 Start with decimal expansion of n; if all digits have the same parity, stop; otherwise write down the number formed by the even digits and the number formed by the odd digits and add them; repeat.

Table of values

List of values

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

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

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