A225099 - cp's OEIS frontend

A225099 Number of ways n can be represented as a sum of two distinct nontrivial prime powers (numbers of the form p^k where p is a prime number and k >= 2).

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 2, 0, 0, 0, 1, 2, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 2, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 2]

cp's OEIS Frontend

A225099 Number of ways n can be represented as a sum of two distinct nontrivial prime powers (numbers of the form p^k where p is a prime number and k >= 2).

Table of values

List of values

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

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

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