A253238 - cp's OEIS frontend

A253238 Number of ways to write n as a sum of a perfect power (>1) and a prime.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	1
10	1
11	3
12	1
13	1
14	1
15	2
16	1
17	1
18	1
19	2
20	1
21	3
22	1
23	2
24	0
25	1
26	1
27	4
28	2
29	2
30	2
31	1
32	3
33	2
34	2
35	3
36	1
37	2
38	4
39	4
40	2
41	2
42	1
43	2
44	2
45	4
46	2
47	3
48	1
49	3
50	2
51	4
52	2
53	2
54	2
55	3
56	4
57	2
58	1
59	2
60	1
61	2
62	3
63	3
64	1
65	2
66	3
67	3
68	4
69	4
70	2
71	2
72	2
73	2
74	1
75	5
76	1
77	4
78	2
79	3
80	3
81	2
82	1
83	5
84	2
85	1
86	4
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3
96	2
97	2
98	4
99	2
100	2
101	2
102	2
103	3
104	2
105	6
106	2
107	4
108	2
109	2
110	4
111	5
112	2
113	3
114	1
115	3
116	3
117	5
118	2
119	3
120	1
121	2
122	4
123	4
124	3
125	3
126	2
127	1
128	6

[0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 0, 1, 1, 4, 2, 2, 2, 1, 3, 2, 2, 3, 1, 2, 4, 4, 2, 2, 1, 2, 2, 4, 2, 3, 1, 3, 2, 4, 2, 2, 2, 3, 4, 2, 1, 2, 1, 2, 3, 3, 1, 2, 3, 3, 4, 4, 2, 2, 2, 2, 1, 5, 1, 4, 2, 3, 3, 2, 1, 5, 2, 1, 4, 4, 3, 2, 1, 2, 4, 3, 2, 3, 2, 2, 4, 2, 2, 2, 2, 3, 2, 6, 2, 4, 2, 2, 4, 5, 2, 3, 1, 3, 3, 5, 2, 3, 1, 2, 4, 4, 3, 3, 2, 1, 6]

cp's OEIS Frontend

A253238 Number of ways to write n as a sum of a perfect power (>1) and a prime.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	1
10	1
11	3
12	1
13	1
14	1
15	2
16	1
17	1
18	1
19	2
20	1
21	3
22	1
23	2
24	0
25	1
26	1
27	4
28	2
29	2
30	2
31	1
32	3
33	2
34	2
35	3
36	1
37	2
38	4
39	4
40	2
41	2
42	1
43	2
44	2
45	4
46	2
47	3
48	1
49	3
50	2
51	4
52	2
53	2
54	2
55	3
56	4
57	2
58	1
59	2
60	1
61	2
62	3
63	3
64	1
65	2
66	3
67	3
68	4
69	4
70	2
71	2
72	2
73	2
74	1
75	5
76	1
77	4
78	2
79	3
80	3
81	2
82	1
83	5
84	2
85	1
86	4
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3
96	2
97	2
98	4
99	2
100	2
101	2
102	2
103	3
104	2
105	6
106	2
107	4
108	2
109	2
110	4
111	5
112	2
113	3
114	1
115	3
116	3
117	5
118	2
119	3
120	1
121	2
122	4
123	4
124	3
125	3
126	2
127	1
128	6

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	1
10	1
11	3
12	1
13	1
14	1
15	2
16	1
17	1
18	1
19	2
20	1
21	3
22	1
23	2
24	0
25	1
26	1
27	4
28	2
29	2
30	2
31	1
32	3
33	2
34	2
35	3
36	1
37	2
38	4
39	4
40	2
41	2
42	1
43	2
44	2
45	4
46	2
47	3
48	1
49	3
50	2
51	4
52	2
53	2
54	2
55	3
56	4
57	2
58	1
59	2
60	1
61	2
62	3
63	3
64	1
65	2
66	3
67	3
68	4
69	4
70	2
71	2
72	2
73	2
74	1
75	5
76	1
77	4
78	2
79	3
80	3
81	2
82	1
83	5
84	2
85	1
86	4
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3
96	2
97	2
98	4
99	2
100	2
101	2
102	2
103	3
104	2
105	6
106	2
107	4
108	2
109	2
110	4
111	5
112	2
113	3
114	1
115	3
116	3
117	5
118	2
119	3
120	1
121	2
122	4
123	4
124	3
125	3
126	2
127	1
128	6

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	1
10	1
11	3
12	1
13	1
14	1
15	2
16	1
17	1
18	1
19	2
20	1
21	3
22	1
23	2
24	0
25	1
26	1
27	4
28	2
29	2
30	2
31	1
32	3
33	2
34	2
35	3
36	1
37	2
38	4
39	4
40	2
41	2
42	1
43	2
44	2
45	4
46	2
47	3
48	1
49	3
50	2
51	4
52	2
53	2
54	2
55	3
56	4
57	2
58	1
59	2
60	1
61	2
62	3
63	3
64	1
65	2
66	3
67	3
68	4
69	4
70	2
71	2
72	2
73	2
74	1
75	5
76	1
77	4
78	2
79	3
80	3
81	2
82	1
83	5
84	2
85	1
86	4
87	4
88	3
89	2
90	1
91	2
92	4
93	3
94	2
95	3
96	2
97	2
98	4
99	2
100	2
101	2
102	2
103	3
104	2
105	6
106	2
107	4
108	2
109	2
110	4
111	5
112	2
113	3
114	1
115	3
116	3
117	5
118	2
119	3
120	1
121	2
122	4
123	4
124	3
125	3
126	2
127	1
128	6