A281543 - cp's OEIS frontend

A281543 Number of partitions n = x + y with y >= x > 0 such that x^2 + y^2 or (x^2 + y^2)/2 is prime.

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

[0, 1, 1, 1, 2, 1, 2, 1, 2, 2, 3, 2, 3, 1, 4, 3, 4, 1, 4, 4, 3, 2, 4, 1, 8, 4, 4, 3, 6, 3, 5, 3, 4, 4, 9, 3, 8, 4, 6, 6, 9, 2, 7, 4, 7, 5, 7, 3, 5, 7, 7, 6, 9, 4, 14, 4, 8, 4, 9, 4, 11, 7, 7, 6, 17, 5, 11, 6, 10, 8, 9, 5, 11, 6, 9, 7, 8, 3, 13, 9, 9, 5, 15, 5, 20, 8, 11, 8, 14, 7, 13, 9, 8, 6, 18, 7, 14, 10, 10, 8]

cp's OEIS Frontend

A281543 Number of partitions n = x + y with y >= x > 0 such that x^2 + y^2 or (x^2 + y^2)/2 is prime.

Table of values

List of values

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

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

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