A229140 - cp's OEIS frontend

A229140 Smallest k such that k^2 + l^2 = n-th number expressible as sum of two squares (A001481).

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	0
11	1
12	3
13	2
14	0
15	1
16	2
17	4
18	3
19	0
20	1
21	2
22	4
23	3
24	0
25	1
26	4
27	2
28	3
29	5
30	0
31	1
32	2
33	6
34	3
35	5
36	4
37	0
38	1
39	2
40	5
41	3
42	4
43	7
44	0
45	1
46	2
47	5
48	3
49	7
50	4
51	6
52	0
53	1
54	2
55	8
56	3
57	6
58	4
59	0
60	1
61	5
62	2
63	7
64	3
65	6
66	4
67	9
68	8
69	0
70	1
71	2
72	3
73	6
74	9
75	4
76	7
77	5
78	0
79	1
80	2
81	9
82	3
83	8
84	4
85	7
86	5
87	0

[0, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 3, 2, 0, 1, 2, 4, 3, 0, 1, 2, 4, 3, 0, 1, 4, 2, 3, 5, 0, 1, 2, 6, 3, 5, 4, 0, 1, 2, 5, 3, 4, 7, 0, 1, 2, 5, 3, 7, 4, 6, 0, 1, 2, 8, 3, 6, 4, 0, 1, 5, 2, 7, 3, 6, 4, 9, 8, 0, 1, 2, 3, 6, 9, 4, 7, 5, 0, 1, 2, 9, 3, 8, 4, 7, 5, 0]

cp's OEIS Frontend

A229140 Smallest k such that k^2 + l^2 = n-th number expressible as sum of two squares (A001481).

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	0
11	1
12	3
13	2
14	0
15	1
16	2
17	4
18	3
19	0
20	1
21	2
22	4
23	3
24	0
25	1
26	4
27	2
28	3
29	5
30	0
31	1
32	2
33	6
34	3
35	5
36	4
37	0
38	1
39	2
40	5
41	3
42	4
43	7
44	0
45	1
46	2
47	5
48	3
49	7
50	4
51	6
52	0
53	1
54	2
55	8
56	3
57	6
58	4
59	0
60	1
61	5
62	2
63	7
64	3
65	6
66	4
67	9
68	8
69	0
70	1
71	2
72	3
73	6
74	9
75	4
76	7
77	5
78	0
79	1
80	2
81	9
82	3
83	8
84	4
85	7
86	5
87	0

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	0
11	1
12	3
13	2
14	0
15	1
16	2
17	4
18	3
19	0
20	1
21	2
22	4
23	3
24	0
25	1
26	4
27	2
28	3
29	5
30	0
31	1
32	2
33	6
34	3
35	5
36	4
37	0
38	1
39	2
40	5
41	3
42	4
43	7
44	0
45	1
46	2
47	5
48	3
49	7
50	4
51	6
52	0
53	1
54	2
55	8
56	3
57	6
58	4
59	0
60	1
61	5
62	2
63	7
64	3
65	6
66	4
67	9
68	8
69	0
70	1
71	2
72	3
73	6
74	9
75	4
76	7
77	5
78	0
79	1
80	2
81	9
82	3
83	8
84	4
85	7
86	5
87	0

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	0
11	1
12	3
13	2
14	0
15	1
16	2
17	4
18	3
19	0
20	1
21	2
22	4
23	3
24	0
25	1
26	4
27	2
28	3
29	5
30	0
31	1
32	2
33	6
34	3
35	5
36	4
37	0
38	1
39	2
40	5
41	3
42	4
43	7
44	0
45	1
46	2
47	5
48	3
49	7
50	4
51	6
52	0
53	1
54	2
55	8
56	3
57	6
58	4
59	0
60	1
61	5
62	2
63	7
64	3
65	6
66	4
67	9
68	8
69	0
70	1
71	2
72	3
73	6
74	9
75	4
76	7
77	5
78	0
79	1
80	2
81	9
82	3
83	8
84	4
85	7
86	5
87	0