A349526 - cp's OEIS frontend

A349526 Modified lexicographic ordering of all pairs i,j with 1 <= i <= j; every pair i,j of positive integers occurs exactly once.

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

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

cp's OEIS Frontend

A349526 Modified lexicographic ordering of all pairs i,j with 1 <= i <= j; every pair i,j of positive integers occurs exactly once.

Table of values

List of values

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

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

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