A090736 - cp's OEIS frontend

A090736 Number of positive integers <= n that can be expressed as a sum of 2 coprime squares > 0.

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

[0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 6, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19]

cp's OEIS Frontend

A090736 Number of positive integers <= n that can be expressed as a sum of 2 coprime squares > 0.

Table of values

List of values

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

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

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