A231071 - cp's OEIS frontend

A231071 Number of solutions to n = +- 1^2 +- 2^2 +- 3^2 +- 4^2 +- ... +- k^2 for minimal k giving at least one solution.

n	a(n)
0	2
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	3
17	1
18	2
19	1
20	1
21	1
22	1
23	1
24	1
25	6
26	1
27	1
28	1
29	1
30	1
31	2
32	2
33	2
34	2
35	1
36	1
37	1
38	1
39	2
40	3
41	2
42	2
43	2
44	1
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	9
53	1
54	3
55	1
56	1
57	1
58	2
59	1
60	1
61	6
62	1
63	1
64	1
65	1
66	1
67	2
68	1
69	5
70	1
71	1
72	1
73	1
74	4
75	3
76	1
77	2
78	1
79	2
80	2
81	1
82	2
83	1
84	14
85	2
86	1
87	3
88	2
89	1
90	2
91	1
92	1
93	7
94	1
95	3
96	2
97	5
98	1
99	2
100	1

[2, 1, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1, 1, 6, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 3, 2, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 9, 1, 3, 1, 1, 1, 2, 1, 1, 6, 1, 1, 1, 1, 1, 2, 1, 5, 1, 1, 1, 1, 4, 3, 1, 2, 1, 2, 2, 1, 2, 1, 14, 2, 1, 3, 2, 1, 2, 1, 1, 7, 1, 3, 2, 5, 1, 2, 1]

cp's OEIS Frontend

A231071 Number of solutions to n = +- 1^2 +- 2^2 +- 3^2 +- 4^2 +- ... +- k^2 for minimal k giving at least one solution.

Table of values

List of values

n	a(n)
0	2
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	3
17	1
18	2
19	1
20	1
21	1
22	1
23	1
24	1
25	6
26	1
27	1
28	1
29	1
30	1
31	2
32	2
33	2
34	2
35	1
36	1
37	1
38	1
39	2
40	3
41	2
42	2
43	2
44	1
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	9
53	1
54	3
55	1
56	1
57	1
58	2
59	1
60	1
61	6
62	1
63	1
64	1
65	1
66	1
67	2
68	1
69	5
70	1
71	1
72	1
73	1
74	4
75	3
76	1
77	2
78	1
79	2
80	2
81	1
82	2
83	1
84	14
85	2
86	1
87	3
88	2
89	1
90	2
91	1
92	1
93	7
94	1
95	3
96	2
97	5
98	1
99	2
100	1

n	a(n)
0	2
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	3
17	1
18	2
19	1
20	1
21	1
22	1
23	1
24	1
25	6
26	1
27	1
28	1
29	1
30	1
31	2
32	2
33	2
34	2
35	1
36	1
37	1
38	1
39	2
40	3
41	2
42	2
43	2
44	1
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	9
53	1
54	3
55	1
56	1
57	1
58	2
59	1
60	1
61	6
62	1
63	1
64	1
65	1
66	1
67	2
68	1
69	5
70	1
71	1
72	1
73	1
74	4
75	3
76	1
77	2
78	1
79	2
80	2
81	1
82	2
83	1
84	14
85	2
86	1
87	3
88	2
89	1
90	2
91	1
92	1
93	7
94	1
95	3
96	2
97	5
98	1
99	2
100	1

n	a(n)
0	2
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	3
17	1
18	2
19	1
20	1
21	1
22	1
23	1
24	1
25	6
26	1
27	1
28	1
29	1
30	1
31	2
32	2
33	2
34	2
35	1
36	1
37	1
38	1
39	2
40	3
41	2
42	2
43	2
44	1
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	9
53	1
54	3
55	1
56	1
57	1
58	2
59	1
60	1
61	6
62	1
63	1
64	1
65	1
66	1
67	2
68	1
69	5
70	1
71	1
72	1
73	1
74	4
75	3
76	1
77	2
78	1
79	2
80	2
81	1
82	2
83	1
84	14
85	2
86	1
87	3
88	2
89	1
90	2
91	1
92	1
93	7
94	1
95	3
96	2
97	5
98	1
99	2
100	1