A129888 - cp's OEIS frontend

A129888 Start with 10; write down the sum of its digits; add last two terms; repeat.

n	a(n)
1	10
2	1
3	11
4	2
5	13
6	4
7	17
8	8
9	25
10	7
11	32
12	5
13	37
14	10
15	47
16	11
17	58
18	13
19	71
20	8
21	79
22	16
23	95
24	14
25	109
26	10
27	119
28	11
29	130
30	4
31	134
32	8
33	142
34	7
35	149
36	14
37	163
38	10
39	173
40	11
41	184
42	13
43	197
44	17
45	214
46	7
47	221
48	5
49	226
50	10
51	236
52	11
53	247
54	13
55	260
56	8
57	268
58	16
59	284
60	14
61	298
62	19
63	317
64	11
65	328
66	13

[10, 1, 11, 2, 13, 4, 17, 8, 25, 7, 32, 5, 37, 10, 47, 11, 58, 13, 71, 8, 79, 16, 95, 14, 109, 10, 119, 11, 130, 4, 134, 8, 142, 7, 149, 14, 163, 10, 173, 11, 184, 13, 197, 17, 214, 7, 221, 5, 226, 10, 236, 11, 247, 13, 260, 8, 268, 16, 284, 14, 298, 19, 317, 11, 328, 13]

cp's OEIS Frontend

A129888 Start with 10; write down the sum of its digits; add last two terms; repeat.

Table of values

List of values

n	a(n)
1	10
2	1
3	11
4	2
5	13
6	4
7	17
8	8
9	25
10	7
11	32
12	5
13	37
14	10
15	47
16	11
17	58
18	13
19	71
20	8
21	79
22	16
23	95
24	14
25	109
26	10
27	119
28	11
29	130
30	4
31	134
32	8
33	142
34	7
35	149
36	14
37	163
38	10
39	173
40	11
41	184
42	13
43	197
44	17
45	214
46	7
47	221
48	5
49	226
50	10
51	236
52	11
53	247
54	13
55	260
56	8
57	268
58	16
59	284
60	14
61	298
62	19
63	317
64	11
65	328
66	13

n	a(n)
1	10
2	1
3	11
4	2
5	13
6	4
7	17
8	8
9	25
10	7
11	32
12	5
13	37
14	10
15	47
16	11
17	58
18	13
19	71
20	8
21	79
22	16
23	95
24	14
25	109
26	10
27	119
28	11
29	130
30	4
31	134
32	8
33	142
34	7
35	149
36	14
37	163
38	10
39	173
40	11
41	184
42	13
43	197
44	17
45	214
46	7
47	221
48	5
49	226
50	10
51	236
52	11
53	247
54	13
55	260
56	8
57	268
58	16
59	284
60	14
61	298
62	19
63	317
64	11
65	328
66	13

n	a(n)
1	10
2	1
3	11
4	2
5	13
6	4
7	17
8	8
9	25
10	7
11	32
12	5
13	37
14	10
15	47
16	11
17	58
18	13
19	71
20	8
21	79
22	16
23	95
24	14
25	109
26	10
27	119
28	11
29	130
30	4
31	134
32	8
33	142
34	7
35	149
36	14
37	163
38	10
39	173
40	11
41	184
42	13
43	197
44	17
45	214
46	7
47	221
48	5
49	226
50	10
51	236
52	11
53	247
54	13
55	260
56	8
57	268
58	16
59	284
60	14
61	298
62	19
63	317
64	11
65	328
66	13