A320040 - cp's OEIS frontend

A320040 Consider the Cantor matrix of rational numbers. This sequence reads the numerator, then the denominator as one moves through the matrix along alternate up and down antidiagonals.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	1
9	2
10	2
11	1
12	3
13	1
14	4
15	2
16	3
17	3
18	2
19	4
20	1
21	5
22	1
23	4
24	2
25	3
26	3
27	2
28	4
29	1
30	5
31	1
32	6
33	2
34	5
35	3
36	4
37	4
38	3
39	5
40	2
41	6
42	1
43	7
44	1
45	6
46	2
47	5
48	3
49	4
50	4
51	3
52	5
53	2
54	6
55	1
56	7
57	1
58	8
59	2
60	7
61	3
62	6
63	4
64	5
65	5
66	4
67	6
68	3
69	7
70	2
71	8
72	1
73	9
74	1
75	8
76	2
77	7
78	3
79	6
80	4
81	5
82	5
83	4
84	6
85	3
86	7
87	2
88	8
89	1
90	9

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

cp's OEIS Frontend

A320040 Consider the Cantor matrix of rational numbers. This sequence reads the numerator, then the denominator as one moves through the matrix along alternate up and down antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	1
9	2
10	2
11	1
12	3
13	1
14	4
15	2
16	3
17	3
18	2
19	4
20	1
21	5
22	1
23	4
24	2
25	3
26	3
27	2
28	4
29	1
30	5
31	1
32	6
33	2
34	5
35	3
36	4
37	4
38	3
39	5
40	2
41	6
42	1
43	7
44	1
45	6
46	2
47	5
48	3
49	4
50	4
51	3
52	5
53	2
54	6
55	1
56	7
57	1
58	8
59	2
60	7
61	3
62	6
63	4
64	5
65	5
66	4
67	6
68	3
69	7
70	2
71	8
72	1
73	9
74	1
75	8
76	2
77	7
78	3
79	6
80	4
81	5
82	5
83	4
84	6
85	3
86	7
87	2
88	8
89	1
90	9

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	1
9	2
10	2
11	1
12	3
13	1
14	4
15	2
16	3
17	3
18	2
19	4
20	1
21	5
22	1
23	4
24	2
25	3
26	3
27	2
28	4
29	1
30	5
31	1
32	6
33	2
34	5
35	3
36	4
37	4
38	3
39	5
40	2
41	6
42	1
43	7
44	1
45	6
46	2
47	5
48	3
49	4
50	4
51	3
52	5
53	2
54	6
55	1
56	7
57	1
58	8
59	2
60	7
61	3
62	6
63	4
64	5
65	5
66	4
67	6
68	3
69	7
70	2
71	8
72	1
73	9
74	1
75	8
76	2
77	7
78	3
79	6
80	4
81	5
82	5
83	4
84	6
85	3
86	7
87	2
88	8
89	1
90	9

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	1
9	2
10	2
11	1
12	3
13	1
14	4
15	2
16	3
17	3
18	2
19	4
20	1
21	5
22	1
23	4
24	2
25	3
26	3
27	2
28	4
29	1
30	5
31	1
32	6
33	2
34	5
35	3
36	4
37	4
38	3
39	5
40	2
41	6
42	1
43	7
44	1
45	6
46	2
47	5
48	3
49	4
50	4
51	3
52	5
53	2
54	6
55	1
56	7
57	1
58	8
59	2
60	7
61	3
62	6
63	4
64	5
65	5
66	4
67	6
68	3
69	7
70	2
71	8
72	1
73	9
74	1
75	8
76	2
77	7
78	3
79	6
80	4
81	5
82	5
83	4
84	6
85	3
86	7
87	2
88	8
89	1
90	9