A379381 - cp's OEIS frontend

A379381 a(1)=1, a(2)=2; thereafter, a(n) is the smallest positive integer such that for any value k, the number of distinct values between a pair of k's is distinct, counting k itself.

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

[1, 2, 1, 2, 3, 3, 4, 2, 4, 5, 5, 6, 4, 6, 7, 2, 6, 7, 8, 7, 8, 9, 9, 10, 6, 8, 10, 11, 10, 11, 12, 2, 11, 12, 13, 8, 13, 14, 11, 12, 13, 14, 15, 14, 15, 16, 16, 17, 2, 13, 15, 17, 18, 8, 15, 18, 19, 17, 19, 20, 17, 18, 20, 21, 20, 21, 22, 22, 23, 18, 21, 23, 24]

cp's OEIS Frontend

A379381 a(1)=1, a(2)=2; thereafter, a(n) is the smallest positive integer such that for any value k, the number of distinct values between a pair of k's is distinct, counting k itself.

Table of values

List of values

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

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

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