A163248 - cp's OEIS frontend

A163248 Sum of the n-th composite number plus the number of composite numbers less than the n-th noncomposite number.

n	a(n)
1	4
2	6
3	8
4	10
5	12
6	17
7	20
8	24
9	26
10	31
11	38
12	40
13	46
14	51
15	53
16	57
17	63
18	69
19	72
20	79
21	83
22	85
23	91
24	95
25	102
26	110
27	114
28	117
29	122
30	124
31	128
32	143
33	147
34	153
35	155
36	165
37	168
38	174
39	180
40	184
41	190
42	197
43	200
44	210
45	212
46	216
47	218
48	231
49	243
50	247

[4, 6, 8, 10, 12, 17, 20, 24, 26, 31, 38, 40, 46, 51, 53, 57, 63, 69, 72, 79, 83, 85, 91, 95, 102, 110, 114, 117, 122, 124, 128, 143, 147, 153, 155, 165, 168, 174, 180, 184, 190, 197, 200, 210, 212, 216, 218, 231, 243, 247]

cp's OEIS Frontend

A163248 Sum of the n-th composite number plus the number of composite numbers less than the n-th noncomposite number.

Table of values

List of values

n	a(n)
1	4
2	6
3	8
4	10
5	12
6	17
7	20
8	24
9	26
10	31
11	38
12	40
13	46
14	51
15	53
16	57
17	63
18	69
19	72
20	79
21	83
22	85
23	91
24	95
25	102
26	110
27	114
28	117
29	122
30	124
31	128
32	143
33	147
34	153
35	155
36	165
37	168
38	174
39	180
40	184
41	190
42	197
43	200
44	210
45	212
46	216
47	218
48	231
49	243
50	247

n	a(n)
1	4
2	6
3	8
4	10
5	12
6	17
7	20
8	24
9	26
10	31
11	38
12	40
13	46
14	51
15	53
16	57
17	63
18	69
19	72
20	79
21	83
22	85
23	91
24	95
25	102
26	110
27	114
28	117
29	122
30	124
31	128
32	143
33	147
34	153
35	155
36	165
37	168
38	174
39	180
40	184
41	190
42	197
43	200
44	210
45	212
46	216
47	218
48	231
49	243
50	247

n	a(n)
1	4
2	6
3	8
4	10
5	12
6	17
7	20
8	24
9	26
10	31
11	38
12	40
13	46
14	51
15	53
16	57
17	63
18	69
19	72
20	79
21	83
22	85
23	91
24	95
25	102
26	110
27	114
28	117
29	122
30	124
31	128
32	143
33	147
34	153
35	155
36	165
37	168
38	174
39	180
40	184
41	190
42	197
43	200
44	210
45	212
46	216
47	218
48	231
49	243
50	247