A263765 - cp's OEIS frontend

A263765 Minimum number of squares necessary to write n as a sum or difference of squares.

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

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

cp's OEIS Frontend

A263765 Minimum number of squares necessary to write n as a sum or difference of squares.

Table of values

List of values

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

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

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