A278912 - cp's OEIS frontend

A278912 Expansion of Product_{k>=1} 1/(1 - x^prime(prime(k))).

n	a(n)
0	1
1	0
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	1
11	2
12	1
13	1
14	2
15	2
16	2
17	3
18	2
19	2
20	4
21	3
22	4
23	4
24	3
25	5
26	5
27	5
28	6
29	5
30	6
31	8
32	7
33	8
34	9
35	8
36	10
37	11
38	10
39	12
40	12
41	13
42	15
43	14
44	16
45	17
46	17
47	19
48	20
49	20
50	22
51	24
52	24
53	26
54	27
55	28
56	31
57	31
58	33
59	36
60	35
61	39
62	42
63	41
64	45
65	47
66	48
67	53
68	54
69	55
70	60
71	61
72	65
73	69
74	69
75	74
76	78
77	80
78	85
79	88
80	90
81	96
82	101
83	104
84	109
85	113
86	117
87	124
88	128
89	133
90	139

[1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 2, 1, 1, 2, 2, 2, 3, 2, 2, 4, 3, 4, 4, 3, 5, 5, 5, 6, 5, 6, 8, 7, 8, 9, 8, 10, 11, 10, 12, 12, 13, 15, 14, 16, 17, 17, 19, 20, 20, 22, 24, 24, 26, 27, 28, 31, 31, 33, 36, 35, 39, 42, 41, 45, 47, 48, 53, 54, 55, 60, 61, 65, 69, 69, 74, 78, 80, 85, 88, 90, 96, 101, 104, 109, 113, 117, 124, 128, 133, 139]

cp's OEIS Frontend

A278912 Expansion of Product_{k>=1} 1/(1 - x^prime(prime(k))).

Table of values

List of values

n	a(n)
0	1
1	0
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	1
11	2
12	1
13	1
14	2
15	2
16	2
17	3
18	2
19	2
20	4
21	3
22	4
23	4
24	3
25	5
26	5
27	5
28	6
29	5
30	6
31	8
32	7
33	8
34	9
35	8
36	10
37	11
38	10
39	12
40	12
41	13
42	15
43	14
44	16
45	17
46	17
47	19
48	20
49	20
50	22
51	24
52	24
53	26
54	27
55	28
56	31
57	31
58	33
59	36
60	35
61	39
62	42
63	41
64	45
65	47
66	48
67	53
68	54
69	55
70	60
71	61
72	65
73	69
74	69
75	74
76	78
77	80
78	85
79	88
80	90
81	96
82	101
83	104
84	109
85	113
86	117
87	124
88	128
89	133
90	139

n	a(n)
0	1
1	0
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	1
11	2
12	1
13	1
14	2
15	2
16	2
17	3
18	2
19	2
20	4
21	3
22	4
23	4
24	3
25	5
26	5
27	5
28	6
29	5
30	6
31	8
32	7
33	8
34	9
35	8
36	10
37	11
38	10
39	12
40	12
41	13
42	15
43	14
44	16
45	17
46	17
47	19
48	20
49	20
50	22
51	24
52	24
53	26
54	27
55	28
56	31
57	31
58	33
59	36
60	35
61	39
62	42
63	41
64	45
65	47
66	48
67	53
68	54
69	55
70	60
71	61
72	65
73	69
74	69
75	74
76	78
77	80
78	85
79	88
80	90
81	96
82	101
83	104
84	109
85	113
86	117
87	124
88	128
89	133
90	139

n	a(n)
0	1
1	0
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	1
10	1
11	2
12	1
13	1
14	2
15	2
16	2
17	3
18	2
19	2
20	4
21	3
22	4
23	4
24	3
25	5
26	5
27	5
28	6
29	5
30	6
31	8
32	7
33	8
34	9
35	8
36	10
37	11
38	10
39	12
40	12
41	13
42	15
43	14
44	16
45	17
46	17
47	19
48	20
49	20
50	22
51	24
52	24
53	26
54	27
55	28
56	31
57	31
58	33
59	36
60	35
61	39
62	42
63	41
64	45
65	47
66	48
67	53
68	54
69	55
70	60
71	61
72	65
73	69
74	69
75	74
76	78
77	80
78	85
79	88
80	90
81	96
82	101
83	104
84	109
85	113
86	117
87	124
88	128
89	133
90	139