A301805 - cp's OEIS frontend

A301805 Number of ways to write 3n^2 as x^2 + 10y^2 + 2^z, where x, y and z are nonnegative integers with z > 3.

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

[0, 0, 1, 1, 2, 2, 3, 3, 3, 2, 4, 4, 4, 4, 4, 4, 6, 4, 4, 3, 5, 4, 4, 5, 7, 5, 4, 4, 6, 4, 7, 5, 5, 7, 7, 5, 5, 4, 8, 5, 7, 6, 11, 6, 6, 5, 8, 5, 6, 7, 5, 7, 6, 5, 5, 5, 7, 7, 4, 4, 8, 8, 8, 6, 6, 6, 9, 8, 8, 7, 8, 6, 10, 6, 10, 6, 8, 8, 8, 5]

cp's OEIS Frontend

A301805 Number of ways to write 3n^2 as x^2 + 10y^2 + 2^z, where x, y and z are nonnegative integers with z > 3.

Table of values

List of values

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

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

cp's OEIS Frontend

A301805 Number of ways to write 3*n^2 as x^2 + 10*y^2 + 2^z, where x, y and z are nonnegative integers with z > 3.

Table of values

List of values

A301805 Number of ways to write 3n^2 as x^2 + 10y^2 + 2^z, where x, y and z are nonnegative integers with z > 3.

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