A290342 - cp's OEIS frontend

A290342 Number of ways to write n as x^2 + 2y^2 + z(z+1)/2, where x is a nonnegative integer, and y and z are positive integers.

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

[0, 0, 0, 1, 1, 1, 1, 1, 1, 3, 1, 1, 4, 2, 2, 2, 1, 2, 4, 3, 2, 4, 2, 4, 4, 3, 1, 4, 5, 2, 5, 1, 3, 6, 5, 2, 3, 6, 3, 9, 3, 1, 6, 3, 5, 4, 4, 6, 7, 3, 2, 5, 3, 6, 9, 6, 3, 7, 6, 2, 8, 5, 4, 8, 6, 3, 4, 6, 3, 12, 2]

cp's OEIS Frontend

A290342 Number of ways to write n as x^2 + 2y^2 + z(z+1)/2, where x is a nonnegative integer, and y and z are positive integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A290342 Number of ways to write n as x^2 + 2*y^2 + z*(z+1)/2, where x is a nonnegative integer, and y and z are positive integers.

Table of values

List of values

A290342 Number of ways to write n as x^2 + 2y^2 + z(z+1)/2, where x is a nonnegative integer, and y and z are positive integers.

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