A093017 - cp's OEIS frontend

A093017 Luhn algorithm double-and-add sum of digits of n.

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

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 7, 8, 9, 10, 11, 12, 13]

cp's OEIS Frontend

A093017 Luhn algorithm double-and-add sum of digits of n.

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

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

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