A288677 - cp's OEIS frontend

A288677 Every element of Z/nZ can be expressed as a sum of no more than a(n) squares.

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

[1, 2, 3, 2, 2, 2, 4, 3, 2, 2, 3, 2, 2, 2, 4, 2, 3, 2, 3, 2, 2, 2, 4, 2, 2, 3, 3, 2, 2, 2, 4, 2, 2, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3, 3, 2, 2, 4, 3, 2, 2, 3, 2, 3, 2, 4, 2, 2, 2, 3, 2, 2, 3, 4, 2, 2, 2, 3, 2, 2, 2, 4, 2, 2, 2, 3, 2, 2, 2, 4, 3, 2, 2, 3, 2, 2, 2, 4, 2, 3, 2, 3, 2, 2, 2, 4, 2, 3, 3, 3]

cp's OEIS Frontend

A288677 Every element of Z/nZ can be expressed as a sum of no more than a(n) squares.

Table of values

List of values

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

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

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