A283273 - cp's OEIS frontend

A283273 Number of ways to write n as x^2 + y^2 + z^2 with x,y integers and z a nonnegative integer such that x + 2y + 3z is a square or twice a square.

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

[1, 2, 4, 3, 2, 6, 3, 0, 4, 6, 4, 5, 3, 5, 7, 0, 2, 3, 4, 6, 6, 7, 5, 0, 3, 4, 9, 5, 0, 15, 4, 0, 4, 3, 6, 9, 6, 4, 7, 0, 4, 7, 7, 4, 5, 9, 3, 0, 3, 2, 6, 9, 5, 11, 12, 0, 7, 5, 4, 13, 0, 9, 6, 0, 2, 9, 11, 2, 3, 6, 5, 0, 4, 5, 12, 6, 6, 11, 5, 0, 6]

cp's OEIS Frontend

A283273 Number of ways to write n as x^2 + y^2 + z^2 with x,y integers and z a nonnegative integer such that x + 2y + 3z is a square or twice a square.

Table of values

List of values

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

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

cp's OEIS Frontend

A283273 Number of ways to write n as x^2 + y^2 + z^2 with x,y integers and z a nonnegative integer such that x + 2*y + 3*z is a square or twice a square.

Table of values

List of values

A283273 Number of ways to write n as x^2 + y^2 + z^2 with x,y integers and z a nonnegative integer such that x + 2y + 3z is a square or twice a square.

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