A363051 - cp's OEIS frontend

A363051 a(n) = Sum_{b=0..floor(sqrt(n/2)), n-b^2 is square} b.

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

[0, 1, 0, 0, 1, 0, 0, 2, 0, 1, 0, 0, 2, 0, 0, 0, 1, 3, 0, 2, 0, 0, 0, 0, 3, 1, 0, 0, 2, 0, 0, 4, 0, 3, 0, 0, 1, 0, 0, 2, 4, 0, 0, 0, 3, 0, 0, 0, 0, 6, 0, 4, 2, 0, 0, 0, 0, 3, 0, 0, 5, 0, 0, 0, 5, 0, 0, 2, 0, 0, 0, 6, 3, 5, 0, 0, 0, 0, 0, 4, 0, 1, 0]

cp's OEIS Frontend

A363051 a(n) = Sum_{b=0..floor(sqrt(n/2)), n-b^2 is square} b.

Table of values

List of values

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

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

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