A049687 - cp's OEIS frontend

A049687 Array T read by diagonals: T(i,j)=number of lines passing through (0,0) and at least one other lattice point (h,k) satisfying 0<=h<=i, 0<=k<=j.

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	5
12	5
13	5
14	1
15	1
16	6
17	7
18	7
19	6
20	1
21	1
22	7
23	8
24	9
25	8
26	7
27	1
28	1
29	8
30	10
31	11
32	11
33	10
34	8
35	1
36	1
37	9
38	11
39	14
40	13
41	14
42	11
43	9
44	1
45	1
46	10
47	13
48	15
49	17
50	17
51	15
52	13
53	10
54	1
55	1
56	11
57	14
58	18
59	18
60	21
61	18
62	18
63	14
64	11
65	1
66	1
67	12
68	16
69	20
70	22
71	23
72	23
73	22
74	20
75	16
76	12
77	1
78	1
79	13
80	17
81	22
82	24

[0, 1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 5, 5, 5, 1, 1, 6, 7, 7, 6, 1, 1, 7, 8, 9, 8, 7, 1, 1, 8, 10, 11, 11, 10, 8, 1, 1, 9, 11, 14, 13, 14, 11, 9, 1, 1, 10, 13, 15, 17, 17, 15, 13, 10, 1, 1, 11, 14, 18, 18, 21, 18, 18, 14, 11, 1, 1, 12, 16, 20, 22, 23, 23, 22, 20, 16, 12, 1, 1, 13, 17, 22, 24]

cp's OEIS Frontend

A049687 Array T read by diagonals: T(i,j)=number of lines passing through (0,0) and at least one other lattice point (h,k) satisfying 0<=h<=i, 0<=k<=j.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	5
12	5
13	5
14	1
15	1
16	6
17	7
18	7
19	6
20	1
21	1
22	7
23	8
24	9
25	8
26	7
27	1
28	1
29	8
30	10
31	11
32	11
33	10
34	8
35	1
36	1
37	9
38	11
39	14
40	13
41	14
42	11
43	9
44	1
45	1
46	10
47	13
48	15
49	17
50	17
51	15
52	13
53	10
54	1
55	1
56	11
57	14
58	18
59	18
60	21
61	18
62	18
63	14
64	11
65	1
66	1
67	12
68	16
69	20
70	22
71	23
72	23
73	22
74	20
75	16
76	12
77	1
78	1
79	13
80	17
81	22
82	24

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	5
12	5
13	5
14	1
15	1
16	6
17	7
18	7
19	6
20	1
21	1
22	7
23	8
24	9
25	8
26	7
27	1
28	1
29	8
30	10
31	11
32	11
33	10
34	8
35	1
36	1
37	9
38	11
39	14
40	13
41	14
42	11
43	9
44	1
45	1
46	10
47	13
48	15
49	17
50	17
51	15
52	13
53	10
54	1
55	1
56	11
57	14
58	18
59	18
60	21
61	18
62	18
63	14
64	11
65	1
66	1
67	12
68	16
69	20
70	22
71	23
72	23
73	22
74	20
75	16
76	12
77	1
78	1
79	13
80	17
81	22
82	24

n	a(n)
0	0
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	5
12	5
13	5
14	1
15	1
16	6
17	7
18	7
19	6
20	1
21	1
22	7
23	8
24	9
25	8
26	7
27	1
28	1
29	8
30	10
31	11
32	11
33	10
34	8
35	1
36	1
37	9
38	11
39	14
40	13
41	14
42	11
43	9
44	1
45	1
46	10
47	13
48	15
49	17
50	17
51	15
52	13
53	10
54	1
55	1
56	11
57	14
58	18
59	18
60	21
61	18
62	18
63	14
64	11
65	1
66	1
67	12
68	16
69	20
70	22
71	23
72	23
73	22
74	20
75	16
76	12
77	1
78	1
79	13
80	17
81	22
82	24