A135141 - cp's OEIS frontend

A135141 a(1)=1, a(p_n)=2a(n), a(c_n)=2a(n)+1, where p_n = n-th prime, c_n = n-th composite number.

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	5
7	6
8	9
9	7
10	17
11	16
12	11
13	10
14	13
15	19
16	15
17	12
18	35
19	18
20	33
21	23
22	21
23	14
24	27
25	39
26	31
27	25
28	71
29	34
30	37
31	32
32	67
33	47
34	43
35	29
36	55
37	22
38	79
39	63
40	51
41	20
42	143
43	26
44	69
45	75
46	65
47	38
48	135
49	95
50	87
51	59
52	111
53	30
54	45
55	159
56	127
57	103
58	41
59	24
60	287
61	70
62	53
63	139
64	151
65	131
66	77
67	36
68	271
69	191

[1, 2, 4, 3, 8, 5, 6, 9, 7, 17, 16, 11, 10, 13, 19, 15, 12, 35, 18, 33, 23, 21, 14, 27, 39, 31, 25, 71, 34, 37, 32, 67, 47, 43, 29, 55, 22, 79, 63, 51, 20, 143, 26, 69, 75, 65, 38, 135, 95, 87, 59, 111, 30, 45, 159, 127, 103, 41, 24, 287, 70, 53, 139, 151, 131, 77, 36, 271, 191]

cp's OEIS Frontend

A135141 a(1)=1, a(p_n)=2a(n), a(c_n)=2a(n)+1, where p_n = n-th prime, c_n = n-th composite number.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	5
7	6
8	9
9	7
10	17
11	16
12	11
13	10
14	13
15	19
16	15
17	12
18	35
19	18
20	33
21	23
22	21
23	14
24	27
25	39
26	31
27	25
28	71
29	34
30	37
31	32
32	67
33	47
34	43
35	29
36	55
37	22
38	79
39	63
40	51
41	20
42	143
43	26
44	69
45	75
46	65
47	38
48	135
49	95
50	87
51	59
52	111
53	30
54	45
55	159
56	127
57	103
58	41
59	24
60	287
61	70
62	53
63	139
64	151
65	131
66	77
67	36
68	271
69	191

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	5
7	6
8	9
9	7
10	17
11	16
12	11
13	10
14	13
15	19
16	15
17	12
18	35
19	18
20	33
21	23
22	21
23	14
24	27
25	39
26	31
27	25
28	71
29	34
30	37
31	32
32	67
33	47
34	43
35	29
36	55
37	22
38	79
39	63
40	51
41	20
42	143
43	26
44	69
45	75
46	65
47	38
48	135
49	95
50	87
51	59
52	111
53	30
54	45
55	159
56	127
57	103
58	41
59	24
60	287
61	70
62	53
63	139
64	151
65	131
66	77
67	36
68	271
69	191

cp's OEIS Frontend

A135141 a(1)=1, a(p_n)=2*a(n), a(c_n)=2*a(n)+1, where p_n = n-th prime, c_n = n-th composite number.

Table of values

List of values

A135141 a(1)=1, a(p_n)=2a(n), a(c_n)=2a(n)+1, where p_n = n-th prime, c_n = n-th composite number.

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	5
7	6
8	9
9	7
10	17
11	16
12	11
13	10
14	13
15	19
16	15
17	12
18	35
19	18
20	33
21	23
22	21
23	14
24	27
25	39
26	31
27	25
28	71
29	34
30	37
31	32
32	67
33	47
34	43
35	29
36	55
37	22
38	79
39	63
40	51
41	20
42	143
43	26
44	69
45	75
46	65
47	38
48	135
49	95
50	87
51	59
52	111
53	30
54	45
55	159
56	127
57	103
58	41
59	24
60	287
61	70
62	53
63	139
64	151
65	131
66	77
67	36
68	271
69	191