A371155 - cp's OEIS frontend

A371155 a(n) depends on the primality of a(n-1) and parity of n (see Comments lines for definition).

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	4
7	5
8	7
9	8
10	6
11	7
12	11
13	12
14	8
15	9
16	10
17	11
18	13
19	14
20	12
21	13
22	17
23	18
24	14
25	15
26	16
27	17
28	19
29	20
30	18
31	19
32	23
33	24
34	20
35	21
36	22
37	23
38	29
39	30
40	24
41	25
42	26
43	27
44	28
45	29
46	31
47	32
48	30
49	31
50	37
51	38
52	32
53	33
54	34
55	35
56	36
57	37
58	41
59	42
60	38
61	39
62	40
63	41
64	43
65	44
66	42
67	43
68	47

[1, 2, 3, 5, 6, 4, 5, 7, 8, 6, 7, 11, 12, 8, 9, 10, 11, 13, 14, 12, 13, 17, 18, 14, 15, 16, 17, 19, 20, 18, 19, 23, 24, 20, 21, 22, 23, 29, 30, 24, 25, 26, 27, 28, 29, 31, 32, 30, 31, 37, 38, 32, 33, 34, 35, 36, 37, 41, 42, 38, 39, 40, 41, 43, 44, 42, 43, 47]

cp's OEIS Frontend

A371155 a(n) depends on the primality of a(n-1) and parity of n (see Comments lines for definition).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	4
7	5
8	7
9	8
10	6
11	7
12	11
13	12
14	8
15	9
16	10
17	11
18	13
19	14
20	12
21	13
22	17
23	18
24	14
25	15
26	16
27	17
28	19
29	20
30	18
31	19
32	23
33	24
34	20
35	21
36	22
37	23
38	29
39	30
40	24
41	25
42	26
43	27
44	28
45	29
46	31
47	32
48	30
49	31
50	37
51	38
52	32
53	33
54	34
55	35
56	36
57	37
58	41
59	42
60	38
61	39
62	40
63	41
64	43
65	44
66	42
67	43
68	47

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	4
7	5
8	7
9	8
10	6
11	7
12	11
13	12
14	8
15	9
16	10
17	11
18	13
19	14
20	12
21	13
22	17
23	18
24	14
25	15
26	16
27	17
28	19
29	20
30	18
31	19
32	23
33	24
34	20
35	21
36	22
37	23
38	29
39	30
40	24
41	25
42	26
43	27
44	28
45	29
46	31
47	32
48	30
49	31
50	37
51	38
52	32
53	33
54	34
55	35
56	36
57	37
58	41
59	42
60	38
61	39
62	40
63	41
64	43
65	44
66	42
67	43
68	47

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	4
7	5
8	7
9	8
10	6
11	7
12	11
13	12
14	8
15	9
16	10
17	11
18	13
19	14
20	12
21	13
22	17
23	18
24	14
25	15
26	16
27	17
28	19
29	20
30	18
31	19
32	23
33	24
34	20
35	21
36	22
37	23
38	29
39	30
40	24
41	25
42	26
43	27
44	28
45	29
46	31
47	32
48	30
49	31
50	37
51	38
52	32
53	33
54	34
55	35
56	36
57	37
58	41
59	42
60	38
61	39
62	40
63	41
64	43
65	44
66	42
67	43
68	47