A303540 - cp's OEIS frontend

A303540 Number of ways to write n as a^2 + b^2 + binomial(2c,c) + binomial(2d,d), where a,b,c,d are nonnegative integers with a <= b and c <= d.

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

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

cp's OEIS Frontend

A303540 Number of ways to write n as a^2 + b^2 + binomial(2c,c) + binomial(2d,d), where a,b,c,d are nonnegative integers with a <= b and c <= d.

Table of values

List of values

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

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

cp's OEIS Frontend

A303540 Number of ways to write n as a^2 + b^2 + binomial(2*c,c) + binomial(2*d,d), where a,b,c,d are nonnegative integers with a <= b and c <= d.

Table of values

List of values

A303540 Number of ways to write n as a^2 + b^2 + binomial(2c,c) + binomial(2d,d), where a,b,c,d are nonnegative integers with a <= b and c <= d.

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