A049723 - cp's OEIS frontend

A049723 Array T read by diagonals; T(i,j)=number of lattice points (x,y) in closed right half-plane and circle with radius (0,0)-to-(i,j).

n	a(n)
0	1
1	4
2	4
3	9
4	6
5	9
6	18
7	13
8	13
9	18
10	29
11	22
12	15
13	22
14	29
15	46
16	33
17	26
18	26
19	33
20	46
21	63
22	50
23	39
24	35
25	39
26	50
27	63
28	82
29	67
30	54
31	46
32	46
33	54
34	67
35	82
36	107
37	88
38	71
39	60
40	56
41	60
42	71
43	88
44	107
45	136
46	115
47	96
48	79
49	75
50	75
51	79
52	96
53	115
54	136
55	169
56	140
57	119
58	100

[1, 4, 4, 9, 6, 9, 18, 13, 13, 18, 29, 22, 15, 22, 29, 46, 33, 26, 26, 33, 46, 63, 50, 39, 35, 39, 50, 63, 82, 67, 54, 46, 46, 54, 67, 82, 107, 88, 71, 60, 56, 60, 71, 88, 107, 136, 115, 96, 79, 75, 75, 79, 96, 115, 136, 169, 140, 119, 100]

cp's OEIS Frontend

A049723 Array T read by diagonals; T(i,j)=number of lattice points (x,y) in closed right half-plane and circle with radius (0,0)-to-(i,j).

Table of values

List of values

n	a(n)
0	1
1	4
2	4
3	9
4	6
5	9
6	18
7	13
8	13
9	18
10	29
11	22
12	15
13	22
14	29
15	46
16	33
17	26
18	26
19	33
20	46
21	63
22	50
23	39
24	35
25	39
26	50
27	63
28	82
29	67
30	54
31	46
32	46
33	54
34	67
35	82
36	107
37	88
38	71
39	60
40	56
41	60
42	71
43	88
44	107
45	136
46	115
47	96
48	79
49	75
50	75
51	79
52	96
53	115
54	136
55	169
56	140
57	119
58	100

n	a(n)
0	1
1	4
2	4
3	9
4	6
5	9
6	18
7	13
8	13
9	18
10	29
11	22
12	15
13	22
14	29
15	46
16	33
17	26
18	26
19	33
20	46
21	63
22	50
23	39
24	35
25	39
26	50
27	63
28	82
29	67
30	54
31	46
32	46
33	54
34	67
35	82
36	107
37	88
38	71
39	60
40	56
41	60
42	71
43	88
44	107
45	136
46	115
47	96
48	79
49	75
50	75
51	79
52	96
53	115
54	136
55	169
56	140
57	119
58	100

n	a(n)
0	1
1	4
2	4
3	9
4	6
5	9
6	18
7	13
8	13
9	18
10	29
11	22
12	15
13	22
14	29
15	46
16	33
17	26
18	26
19	33
20	46
21	63
22	50
23	39
24	35
25	39
26	50
27	63
28	82
29	67
30	54
31	46
32	46
33	54
34	67
35	82
36	107
37	88
38	71
39	60
40	56
41	60
42	71
43	88
44	107
45	136
46	115
47	96
48	79
49	75
50	75
51	79
52	96
53	115
54	136
55	169
56	140
57	119
58	100