A305024 - cp's OEIS frontend

A305024 Minimal number of squares, not all equal to 1, having as sum prime(n), such that their squares also sum to a prime; 0 if no such decomposition exists.

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

[0, 0, 2, 4, 3, 2, 2, 3, 4, 2, 4, 2, 2, 3, 7, 2, 5, 4, 4, 4, 2, 4, 3, 2, 3, 3, 5, 3, 4, 5, 4, 3, 2, 3, 2, 4, 2, 4, 4, 3, 3, 2, 4, 4, 4, 4, 3, 4, 3, 4, 3, 4, 3, 3, 2, 4, 2, 4, 3, 2, 3, 2, 4, 4, 2, 4, 4, 4, 3, 2, 3, 4, 4, 2, 3, 4, 3, 2, 2, 2, 3, 2, 4, 3, 4, 3, 3, 4, 2, 4, 3, 4, 4, 3, 3]

cp's OEIS Frontend

A305024 Minimal number of squares, not all equal to 1, having as sum prime(n), such that their squares also sum to a prime; 0 if no such decomposition exists.

Table of values

List of values

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

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

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