A088898 - cp's OEIS frontend

A088898 T(n,k) = number of ordered pairs of integers (x,y) with x^2/n^2 + y^2/k^2 < 1, 1<=k<=n; triangular array, read by rows.

n	a(n)
1	1
2	3
3	9
4	5
5	15
6	25
7	7
8	21
9	31
10	45
11	9
12	27
13	41
14	59
15	69
16	11
17	33
18	51
19	69
20	87
21	109
22	13
23	39
24	61
25	83
26	105
27	127
28	145
29	15
30	41
31	67
32	93
33	119
34	141
35	171
36	193
37	17
38	47
39	77
40	103
41	137
42	159
43	193
44	219
45	249
46	19
47	53
48	87
49	117
50	147
51	181
52	215
53	241
54	275
55	305
56	21
57	59
58	97
59	131
60	165
61	203

[1, 3, 9, 5, 15, 25, 7, 21, 31, 45, 9, 27, 41, 59, 69, 11, 33, 51, 69, 87, 109, 13, 39, 61, 83, 105, 127, 145, 15, 41, 67, 93, 119, 141, 171, 193, 17, 47, 77, 103, 137, 159, 193, 219, 249, 19, 53, 87, 117, 147, 181, 215, 241, 275, 305, 21, 59, 97, 131, 165, 203]

cp's OEIS Frontend

A088898 T(n,k) = number of ordered pairs of integers (x,y) with x^2/n^2 + y^2/k^2 < 1, 1<=k<=n; triangular array, read by rows.

Table of values

List of values

n	a(n)
1	1
2	3
3	9
4	5
5	15
6	25
7	7
8	21
9	31
10	45
11	9
12	27
13	41
14	59
15	69
16	11
17	33
18	51
19	69
20	87
21	109
22	13
23	39
24	61
25	83
26	105
27	127
28	145
29	15
30	41
31	67
32	93
33	119
34	141
35	171
36	193
37	17
38	47
39	77
40	103
41	137
42	159
43	193
44	219
45	249
46	19
47	53
48	87
49	117
50	147
51	181
52	215
53	241
54	275
55	305
56	21
57	59
58	97
59	131
60	165
61	203

n	a(n)
1	1
2	3
3	9
4	5
5	15
6	25
7	7
8	21
9	31
10	45
11	9
12	27
13	41
14	59
15	69
16	11
17	33
18	51
19	69
20	87
21	109
22	13
23	39
24	61
25	83
26	105
27	127
28	145
29	15
30	41
31	67
32	93
33	119
34	141
35	171
36	193
37	17
38	47
39	77
40	103
41	137
42	159
43	193
44	219
45	249
46	19
47	53
48	87
49	117
50	147
51	181
52	215
53	241
54	275
55	305
56	21
57	59
58	97
59	131
60	165
61	203

n	a(n)
1	1
2	3
3	9
4	5
5	15
6	25
7	7
8	21
9	31
10	45
11	9
12	27
13	41
14	59
15	69
16	11
17	33
18	51
19	69
20	87
21	109
22	13
23	39
24	61
25	83
26	105
27	127
28	145
29	15
30	41
31	67
32	93
33	119
34	141
35	171
36	193
37	17
38	47
39	77
40	103
41	137
42	159
43	193
44	219
45	249
46	19
47	53
48	87
49	117
50	147
51	181
52	215
53	241
54	275
55	305
56	21
57	59
58	97
59	131
60	165
61	203