A378764 - cp's OEIS frontend

A378764 Sum of the semiprimes which are less than or equal to n minus the sum of the primes which are less than or equal to n.

n	a(n)
1	0
2	-2
3	-5
4	-1
5	-6
6	0
7	-7
8	-7
9	2
10	12
11	1
12	1
13	-12
14	2
15	17
16	17
17	0
18	0
19	-19
20	-19
21	2
22	24
23	1
24	1
25	26
26	52
27	52
28	52
29	23
30	23
31	-8
32	-8
33	25
34	59
35	94
36	94
37	57
38	95
39	134
40	134
41	93
42	93
43	50
44	50
45	50
46	96
47	49
48	49
49	98
50	98
51	149
52	149
53	96
54	96
55	151
56	151
57	208
58	266
59	207
60	207
61	146
62	208
63	208
64	208
65	273
66	273
67	206
68	206
69	275
70	275

[0, -2, -5, -1, -6, 0, -7, -7, 2, 12, 1, 1, -12, 2, 17, 17, 0, 0, -19, -19, 2, 24, 1, 1, 26, 52, 52, 52, 23, 23, -8, -8, 25, 59, 94, 94, 57, 95, 134, 134, 93, 93, 50, 50, 50, 96, 49, 49, 98, 98, 149, 149, 96, 96, 151, 151, 208, 266, 207, 207, 146, 208, 208, 208, 273, 273, 206, 206, 275, 275]

cp's OEIS Frontend

A378764 Sum of the semiprimes which are less than or equal to n minus the sum of the primes which are less than or equal to n.

Table of values

List of values

n	a(n)
1	0
2	-2
3	-5
4	-1
5	-6
6	0
7	-7
8	-7
9	2
10	12
11	1
12	1
13	-12
14	2
15	17
16	17
17	0
18	0
19	-19
20	-19
21	2
22	24
23	1
24	1
25	26
26	52
27	52
28	52
29	23
30	23
31	-8
32	-8
33	25
34	59
35	94
36	94
37	57
38	95
39	134
40	134
41	93
42	93
43	50
44	50
45	50
46	96
47	49
48	49
49	98
50	98
51	149
52	149
53	96
54	96
55	151
56	151
57	208
58	266
59	207
60	207
61	146
62	208
63	208
64	208
65	273
66	273
67	206
68	206
69	275
70	275

n	a(n)
1	0
2	-2
3	-5
4	-1
5	-6
6	0
7	-7
8	-7
9	2
10	12
11	1
12	1
13	-12
14	2
15	17
16	17
17	0
18	0
19	-19
20	-19
21	2
22	24
23	1
24	1
25	26
26	52
27	52
28	52
29	23
30	23
31	-8
32	-8
33	25
34	59
35	94
36	94
37	57
38	95
39	134
40	134
41	93
42	93
43	50
44	50
45	50
46	96
47	49
48	49
49	98
50	98
51	149
52	149
53	96
54	96
55	151
56	151
57	208
58	266
59	207
60	207
61	146
62	208
63	208
64	208
65	273
66	273
67	206
68	206
69	275
70	275

n	a(n)
1	0
2	-2
3	-5
4	-1
5	-6
6	0
7	-7
8	-7
9	2
10	12
11	1
12	1
13	-12
14	2
15	17
16	17
17	0
18	0
19	-19
20	-19
21	2
22	24
23	1
24	1
25	26
26	52
27	52
28	52
29	23
30	23
31	-8
32	-8
33	25
34	59
35	94
36	94
37	57
38	95
39	134
40	134
41	93
42	93
43	50
44	50
45	50
46	96
47	49
48	49
49	98
50	98
51	149
52	149
53	96
54	96
55	151
56	151
57	208
58	266
59	207
60	207
61	146
62	208
63	208
64	208
65	273
66	273
67	206
68	206
69	275
70	275