A348217 - cp's OEIS frontend

A348217 a(1) = 2; for n > 1, let d be the largest divisor of n appearing in all previous terms and k the largest value such that a(k) = d, then a(n) = n - k.

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

[2, 1, 1, 3, 2, 2, 4, 1, 5, 1, 1, 5, 2, 1, 3, 9, 3, 2, 5, 1, 4, 4, 3, 2, 6, 2, 11, 6, 9, 2, 11, 10, 2, 1, 16, 7, 3, 5, 2, 8, 7, 1, 1, 13, 16, 7, 4, 3, 3, 18, 2, 8, 10, 4, 24, 4, 8, 7, 16, 7, 18, 11, 34, 5, 21, 4, 24, 5, 20, 17, 28, 5, 30, 23, 3, 10, 15, 34, 36, 11, 52, 31, 40, 13, 15, 35, 12, 8]

cp's OEIS Frontend

A348217 a(1) = 2; for n > 1, let d be the largest divisor of n appearing in all previous terms and k the largest value such that a(k) = d, then a(n) = n - k.

Table of values

List of values

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

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

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