A283366 - cp's OEIS frontend

A283366 Number of ways to write 2n + 1 as x^2 + y^2 + 2z^2 with x,y,z integers such that 2*x + y + z is a square or a power of two.

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

[2, 4, 3, 5, 4, 2, 7, 5, 5, 6, 3, 5, 7, 8, 3, 9, 7, 3, 11, 1, 2, 8, 9, 7, 6, 2, 3, 11, 7, 7, 7, 7, 1, 12, 7, 4, 12, 6, 7, 4, 8, 4, 8, 7, 7, 9, 3, 1, 15, 8, 2, 12, 4, 4, 4, 8, 5, 12, 11, 5, 7, 6, 5, 11, 2, 3, 12, 12, 9, 9, 9, 4, 12, 8, 5, 5, 7, 3, 18, 8, 6]

cp's OEIS Frontend

A283366 Number of ways to write 2n + 1 as x^2 + y^2 + 2z^2 with x,y,z integers such that 2*x + y + z is a square or a power of two.

Table of values

List of values

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

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

cp's OEIS Frontend

A283366 Number of ways to write 2*n + 1 as x^2 + y^2 + 2*z^2 with x,y,z integers such that 2*x + y + z is a square or a power of two.

Table of values

List of values

A283366 Number of ways to write 2n + 1 as x^2 + y^2 + 2z^2 with x,y,z integers such that 2*x + y + z is a square or a power of two.

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