A088307 - cp's OEIS frontend

A088307 Triangle, read by rows, T(n,k) = n^2 + k^2 if gcd(n,k)=1, otherwise 0.

n	a(n)
1	2
2	5
3	0
4	10
5	13
6	0
7	17
8	0
9	25
10	0
11	26
12	29
13	34
14	41
15	0
16	37
17	0
18	0
19	0
20	61
21	0
22	50
23	53
24	58
25	65
26	74
27	85
28	0
29	65
30	0
31	73
32	0
33	89
34	0
35	113
36	0
37	82
38	85
39	0
40	97
41	106
42	0
43	130
44	145
45	0
46	101
47	0
48	109
49	0
50	0
51	0
52	149
53	0
54	181
55	0
56	122
57	125
58	130
59	137
60	146
61	157
62	170
63	185
64	202
65	221
66	0

[2, 5, 0, 10, 13, 0, 17, 0, 25, 0, 26, 29, 34, 41, 0, 37, 0, 0, 0, 61, 0, 50, 53, 58, 65, 74, 85, 0, 65, 0, 73, 0, 89, 0, 113, 0, 82, 85, 0, 97, 106, 0, 130, 145, 0, 101, 0, 109, 0, 0, 0, 149, 0, 181, 0, 122, 125, 130, 137, 146, 157, 170, 185, 202, 221, 0]

cp's OEIS Frontend

A088307 Triangle, read by rows, T(n,k) = n^2 + k^2 if gcd(n,k)=1, otherwise 0.

Table of values

List of values

n	a(n)
1	2
2	5
3	0
4	10
5	13
6	0
7	17
8	0
9	25
10	0
11	26
12	29
13	34
14	41
15	0
16	37
17	0
18	0
19	0
20	61
21	0
22	50
23	53
24	58
25	65
26	74
27	85
28	0
29	65
30	0
31	73
32	0
33	89
34	0
35	113
36	0
37	82
38	85
39	0
40	97
41	106
42	0
43	130
44	145
45	0
46	101
47	0
48	109
49	0
50	0
51	0
52	149
53	0
54	181
55	0
56	122
57	125
58	130
59	137
60	146
61	157
62	170
63	185
64	202
65	221
66	0

n	a(n)
1	2
2	5
3	0
4	10
5	13
6	0
7	17
8	0
9	25
10	0
11	26
12	29
13	34
14	41
15	0
16	37
17	0
18	0
19	0
20	61
21	0
22	50
23	53
24	58
25	65
26	74
27	85
28	0
29	65
30	0
31	73
32	0
33	89
34	0
35	113
36	0
37	82
38	85
39	0
40	97
41	106
42	0
43	130
44	145
45	0
46	101
47	0
48	109
49	0
50	0
51	0
52	149
53	0
54	181
55	0
56	122
57	125
58	130
59	137
60	146
61	157
62	170
63	185
64	202
65	221
66	0

n	a(n)
1	2
2	5
3	0
4	10
5	13
6	0
7	17
8	0
9	25
10	0
11	26
12	29
13	34
14	41
15	0
16	37
17	0
18	0
19	0
20	61
21	0
22	50
23	53
24	58
25	65
26	74
27	85
28	0
29	65
30	0
31	73
32	0
33	89
34	0
35	113
36	0
37	82
38	85
39	0
40	97
41	106
42	0
43	130
44	145
45	0
46	101
47	0
48	109
49	0
50	0
51	0
52	149
53	0
54	181
55	0
56	122
57	125
58	130
59	137
60	146
61	157
62	170
63	185
64	202
65	221
66	0