A098236 - cp's OEIS frontend

A098236 Number of ways to write n as the sum of two positive distinct squarefree numbers.

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

[0, 0, 1, 1, 1, 1, 2, 3, 2, 1, 2, 3, 3, 2, 3, 5, 4, 4, 3, 5, 4, 4, 4, 7, 5, 4, 5, 6, 5, 4, 5, 8, 6, 6, 6, 11, 7, 6, 7, 11, 8, 7, 9, 12, 10, 7, 8, 13, 10, 8, 7, 13, 10, 10, 7, 13, 10, 10, 9, 14, 11, 10, 11, 15, 11, 10, 11, 17, 12, 12, 11, 21, 13, 13, 13, 19, 14, 12, 14, 20, 16, 12, 13, 21]

cp's OEIS Frontend

A098236 Number of ways to write n as the sum of two positive distinct squarefree numbers.

Table of values

List of values

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

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

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