A338746 - cp's OEIS frontend

A338746 When a(n) is odd, a(n) is the number of prime digits present so far in the sequence, a(n) included.

n	a(n)
1	2
2	1
3	4
4	6
5	8
6	10
7	12
8	3
9	14
10	16
11	18
12	20
13	5
14	22
15	24
16	26
17	9
18	28
19	30
20	11
21	32
22	34
23	15
24	36
25	17
26	38
27	40
28	42
29	19
30	44
31	46
32	48
33	50
34	21
35	23
36	25
37	27
38	52
39	54
40	31
41	33
42	35
43	37
44	56
45	39
46	58
47	60
48	62
49	41
50	64
51	66
52	68
53	70
54	43
55	72
56	74
57	47
58	76
59	78
60	49
61	80
62	82
63	51
64	53
65	55
66	57
67	84
68	86
69	88
70	90
71	92
72	59
73	94
74	96
75	98
76	100
77	102

[2, 1, 4, 6, 8, 10, 12, 3, 14, 16, 18, 20, 5, 22, 24, 26, 9, 28, 30, 11, 32, 34, 15, 36, 17, 38, 40, 42, 19, 44, 46, 48, 50, 21, 23, 25, 27, 52, 54, 31, 33, 35, 37, 56, 39, 58, 60, 62, 41, 64, 66, 68, 70, 43, 72, 74, 47, 76, 78, 49, 80, 82, 51, 53, 55, 57, 84, 86, 88, 90, 92, 59, 94, 96, 98, 100, 102]

cp's OEIS Frontend

A338746 When a(n) is odd, a(n) is the number of prime digits present so far in the sequence, a(n) included.

Table of values

List of values

n	a(n)
1	2
2	1
3	4
4	6
5	8
6	10
7	12
8	3
9	14
10	16
11	18
12	20
13	5
14	22
15	24
16	26
17	9
18	28
19	30
20	11
21	32
22	34
23	15
24	36
25	17
26	38
27	40
28	42
29	19
30	44
31	46
32	48
33	50
34	21
35	23
36	25
37	27
38	52
39	54
40	31
41	33
42	35
43	37
44	56
45	39
46	58
47	60
48	62
49	41
50	64
51	66
52	68
53	70
54	43
55	72
56	74
57	47
58	76
59	78
60	49
61	80
62	82
63	51
64	53
65	55
66	57
67	84
68	86
69	88
70	90
71	92
72	59
73	94
74	96
75	98
76	100
77	102

n	a(n)
1	2
2	1
3	4
4	6
5	8
6	10
7	12
8	3
9	14
10	16
11	18
12	20
13	5
14	22
15	24
16	26
17	9
18	28
19	30
20	11
21	32
22	34
23	15
24	36
25	17
26	38
27	40
28	42
29	19
30	44
31	46
32	48
33	50
34	21
35	23
36	25
37	27
38	52
39	54
40	31
41	33
42	35
43	37
44	56
45	39
46	58
47	60
48	62
49	41
50	64
51	66
52	68
53	70
54	43
55	72
56	74
57	47
58	76
59	78
60	49
61	80
62	82
63	51
64	53
65	55
66	57
67	84
68	86
69	88
70	90
71	92
72	59
73	94
74	96
75	98
76	100
77	102

n	a(n)
1	2
2	1
3	4
4	6
5	8
6	10
7	12
8	3
9	14
10	16
11	18
12	20
13	5
14	22
15	24
16	26
17	9
18	28
19	30
20	11
21	32
22	34
23	15
24	36
25	17
26	38
27	40
28	42
29	19
30	44
31	46
32	48
33	50
34	21
35	23
36	25
37	27
38	52
39	54
40	31
41	33
42	35
43	37
44	56
45	39
46	58
47	60
48	62
49	41
50	64
51	66
52	68
53	70
54	43
55	72
56	74
57	47
58	76
59	78
60	49
61	80
62	82
63	51
64	53
65	55
66	57
67	84
68	86
69	88
70	90
71	92
72	59
73	94
74	96
75	98
76	100
77	102