A368485 - cp's OEIS frontend

A368485 Lexicographically earliest infinite sequence of positive integers such that for n > 1, a(n - a(n)) is distinct for all indices n with the same a(n) value.

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

[1, 1, 2, 1, 2, 3, 1, 2, 3, 3, 4, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 4, 4, 5, 6, 1, 2, 3, 4, 5, 5, 5, 6, 7, 1, 2, 3, 4, 5, 6, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 6, 6, 6, 7, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 7, 7, 7, 8, 8, 9, 10, 11]

cp's OEIS Frontend

A368485 Lexicographically earliest infinite sequence of positive integers such that for n > 1, a(n - a(n)) is distinct for all indices n with the same a(n) value.

Table of values

List of values

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

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

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