A071068 - cp's OEIS frontend

A071068 Number of ways to write n as a sum of two unordered squarefree numbers.

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

[0, 1, 1, 2, 1, 2, 2, 3, 2, 2, 2, 4, 3, 3, 3, 5, 4, 4, 3, 6, 4, 5, 4, 7, 5, 5, 5, 7, 5, 5, 5, 8, 6, 7, 6, 11, 7, 7, 7, 11, 8, 8, 9, 13, 10, 8, 8, 13, 10, 8, 7, 14, 10, 10, 7, 13, 10, 11, 9, 15, 11, 11, 11, 15, 11, 11, 11, 18, 12, 13, 11, 21, 13, 14, 13, 20, 14, 13, 14, 20, 16, 13, 13, 22, 15]

cp's OEIS Frontend

A071068 Number of ways to write n as a sum of two unordered squarefree numbers.

Table of values

List of values

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

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

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