A157807 - cp's OEIS frontend

A157807 Numerators of fractions arranged in "antidiagonal boustrophedon" ordering with equivalent fractions removed: (1/1, 2/1, 1/2, 1/3, 3/1, 4/1, 3/2, 2/3, 1/4, 1/5, 5/1, 6/1, 5/2, ...).

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

[1, 2, 1, 1, 3, 4, 3, 2, 1, 1, 5, 6, 5, 4, 3, 2, 1, 1, 3, 5, 7, 8, 7, 5, 4, 2, 1, 1, 3, 7, 9, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 5, 7, 11, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 3, 5, 9, 11, 13, 14, 13, 11, 8, 7, 4, 2, 1, 1, 3, 5, 7, 9, 11, 13, 15, 16, 15, 14]

cp's OEIS Frontend

A157807 Numerators of fractions arranged in "antidiagonal boustrophedon" ordering with equivalent fractions removed: (1/1, 2/1, 1/2, 1/3, 3/1, 4/1, 3/2, 2/3, 1/4, 1/5, 5/1, 6/1, 5/2, ...).

Table of values

List of values

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

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

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