A303934 - cp's OEIS frontend

A303934 Number of ways to write 2*n as p + 2^k + 5^m with p prime and 2^k + 5^m squarefree, where k and m are nonnegative integers.

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

[0, 1, 1, 3, 3, 2, 2, 3, 3, 4, 3, 5, 4, 4, 3, 4, 5, 7, 4, 7, 4, 8, 7, 6, 7, 6, 5, 5, 5, 7, 5, 8, 5, 5, 8, 6, 9, 9, 6, 8, 6, 6, 7, 8, 4, 7, 8, 7, 3, 10, 6, 7, 8, 7, 7, 9, 5, 8, 7, 6, 5, 5, 6, 3, 11, 7, 9, 12, 8, 12, 10, 11, 11, 9, 7, 9, 7, 8, 8, 11, 7, 11, 8, 9, 15, 11, 8, 9, 8, 9]

cp's OEIS Frontend

A303934 Number of ways to write 2*n as p + 2^k + 5^m with p prime and 2^k + 5^m squarefree, where k and m are nonnegative integers.

Table of values

List of values

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

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

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