A098983 - cp's OEIS frontend

A098983 Number of ways of writing n as a sum of a prime and a squarefree number.

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

[0, 0, 0, 1, 2, 2, 2, 2, 4, 3, 3, 1, 4, 4, 4, 3, 5, 4, 6, 4, 6, 4, 6, 3, 9, 5, 7, 3, 7, 4, 7, 4, 8, 7, 9, 4, 10, 6, 8, 6, 10, 6, 11, 7, 12, 8, 11, 5, 13, 8, 11, 6, 11, 8, 13, 6, 10, 7, 13, 6, 16, 7, 13, 8, 16, 7, 14, 7, 13, 10, 15, 7, 18, 10, 17, 10, 18, 9, 17, 8, 17, 12, 17, 8, 21, 12, 15, 9, 18, 13]

cp's OEIS Frontend

A098983 Number of ways of writing n as a sum of a prime and a squarefree number.

Table of values

List of values

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

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

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