A240718 - cp's OEIS frontend

A240718 Number of decompositions of 2n into an unordered sum of two primes, one of the two primes less than sqrt(2n-2).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	1
9	0
10	1
11	1
12	0
13	1
14	1
15	0
16	1
17	2
18	1
19	0
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	1
37	2
38	2
39	2
40	1
41	1
42	1
43	2
44	1
45	1
46	1
47	1
48	1
49	0
50	1
51	1
52	2
53	2
54	2
55	2
56	2
57	2
58	2
59	1
60	1
61	0
62	1
63	0
64	0
65	1
66	1
67	2
68	1
69	2
70	1
71	3
72	2
73	1
74	1
75	1
76	1
77	2
78	2
79	1
80	2
81	2
82	1
83	1
84	2
85	2
86	1
87	2
88	2
89	2
90	2
91	1
92	3
93	3
94	1
95	1
96	2
97	2
98	2
99	2
100	2

[0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 1, 1, 0, 1, 0, 0, 1, 1, 2, 1, 2, 1, 3, 2, 1, 1, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 2, 2, 2, 1, 3, 3, 1, 1, 2, 2, 2, 2, 2]

cp's OEIS Frontend

A240718 Number of decompositions of 2n into an unordered sum of two primes, one of the two primes less than sqrt(2n-2).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	1
9	0
10	1
11	1
12	0
13	1
14	1
15	0
16	1
17	2
18	1
19	0
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	1
37	2
38	2
39	2
40	1
41	1
42	1
43	2
44	1
45	1
46	1
47	1
48	1
49	0
50	1
51	1
52	2
53	2
54	2
55	2
56	2
57	2
58	2
59	1
60	1
61	0
62	1
63	0
64	0
65	1
66	1
67	2
68	1
69	2
70	1
71	3
72	2
73	1
74	1
75	1
76	1
77	2
78	2
79	1
80	2
81	2
82	1
83	1
84	2
85	2
86	1
87	2
88	2
89	2
90	2
91	1
92	3
93	3
94	1
95	1
96	2
97	2
98	2
99	2
100	2

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	1
9	0
10	1
11	1
12	0
13	1
14	1
15	0
16	1
17	2
18	1
19	0
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	1
37	2
38	2
39	2
40	1
41	1
42	1
43	2
44	1
45	1
46	1
47	1
48	1
49	0
50	1
51	1
52	2
53	2
54	2
55	2
56	2
57	2
58	2
59	1
60	1
61	0
62	1
63	0
64	0
65	1
66	1
67	2
68	1
69	2
70	1
71	3
72	2
73	1
74	1
75	1
76	1
77	2
78	2
79	1
80	2
81	2
82	1
83	1
84	2
85	2
86	1
87	2
88	2
89	2
90	2
91	1
92	3
93	3
94	1
95	1
96	2
97	2
98	2
99	2
100	2

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	1
9	0
10	1
11	1
12	0
13	1
14	1
15	0
16	1
17	2
18	1
19	0
20	1
21	1
22	1
23	2
24	1
25	1
26	1
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	1
37	2
38	2
39	2
40	1
41	1
42	1
43	2
44	1
45	1
46	1
47	1
48	1
49	0
50	1
51	1
52	2
53	2
54	2
55	2
56	2
57	2
58	2
59	1
60	1
61	0
62	1
63	0
64	0
65	1
66	1
67	2
68	1
69	2
70	1
71	3
72	2
73	1
74	1
75	1
76	1
77	2
78	2
79	1
80	2
81	2
82	1
83	1
84	2
85	2
86	1
87	2
88	2
89	2
90	2
91	1
92	3
93	3
94	1
95	1
96	2
97	2
98	2
99	2
100	2