A088897 - cp's OEIS frontend

A088897 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	5
2	7
3	13
4	9
5	19
6	29
7	11
8	25
9	35
10	49
11	13
12	31
13	45
14	63
15	81
16	15
17	37
18	55
19	73
20	91
21	113
22	17
23	43
24	65
25	87
26	109
27	131
28	149
29	19
30	45
31	71
32	97
33	123
34	145
35	175
36	197
37	21
38	51
39	81
40	107
41	141
42	163
43	197
44	223
45	253
46	23
47	57
48	91
49	121
50	159
51	185
52	219
53	245
54	279
55	317
56	25
57	63
58	101
59	135
60	169

[5, 7, 13, 9, 19, 29, 11, 25, 35, 49, 13, 31, 45, 63, 81, 15, 37, 55, 73, 91, 113, 17, 43, 65, 87, 109, 131, 149, 19, 45, 71, 97, 123, 145, 175, 197, 21, 51, 81, 107, 141, 163, 197, 223, 253, 23, 57, 91, 121, 159, 185, 219, 245, 279, 317, 25, 63, 101, 135, 169]

cp's OEIS Frontend

A088897 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	5
2	7
3	13
4	9
5	19
6	29
7	11
8	25
9	35
10	49
11	13
12	31
13	45
14	63
15	81
16	15
17	37
18	55
19	73
20	91
21	113
22	17
23	43
24	65
25	87
26	109
27	131
28	149
29	19
30	45
31	71
32	97
33	123
34	145
35	175
36	197
37	21
38	51
39	81
40	107
41	141
42	163
43	197
44	223
45	253
46	23
47	57
48	91
49	121
50	159
51	185
52	219
53	245
54	279
55	317
56	25
57	63
58	101
59	135
60	169

n	a(n)
1	5
2	7
3	13
4	9
5	19
6	29
7	11
8	25
9	35
10	49
11	13
12	31
13	45
14	63
15	81
16	15
17	37
18	55
19	73
20	91
21	113
22	17
23	43
24	65
25	87
26	109
27	131
28	149
29	19
30	45
31	71
32	97
33	123
34	145
35	175
36	197
37	21
38	51
39	81
40	107
41	141
42	163
43	197
44	223
45	253
46	23
47	57
48	91
49	121
50	159
51	185
52	219
53	245
54	279
55	317
56	25
57	63
58	101
59	135
60	169

n	a(n)
1	5
2	7
3	13
4	9
5	19
6	29
7	11
8	25
9	35
10	49
11	13
12	31
13	45
14	63
15	81
16	15
17	37
18	55
19	73
20	91
21	113
22	17
23	43
24	65
25	87
26	109
27	131
28	149
29	19
30	45
31	71
32	97
33	123
34	145
35	175
36	197
37	21
38	51
39	81
40	107
41	141
42	163
43	197
44	223
45	253
46	23
47	57
48	91
49	121
50	159
51	185
52	219
53	245
54	279
55	317
56	25
57	63
58	101
59	135
60	169