A155498 - cp's OEIS frontend

A155498 Number of odd digits in the concatenation of first n primes.

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	7
7	9
8	11
9	12
10	13
11	15
12	17
13	18
14	19
15	20
16	22
17	24
18	25
19	26
20	28
21	30
22	32
23	33
24	34
25	36
26	38
27	40
28	42
29	44
30	47
31	49
32	52
33	55
34	58
35	60
36	63
37	66
38	68
39	70
40	73
41	76
42	78
43	81
44	84
45	87
46	90
47	92
48	93
49	94
50	95
51	97
52	99
53	100
54	102
55	104
56	105
57	106
58	108
59	110
60	111
61	112
62	114
63	116
64	119
65	122
66	125
67	128

[0, 1, 2, 3, 5, 7, 9, 11, 12, 13, 15, 17, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 33, 34, 36, 38, 40, 42, 44, 47, 49, 52, 55, 58, 60, 63, 66, 68, 70, 73, 76, 78, 81, 84, 87, 90, 92, 93, 94, 95, 97, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 116, 119, 122, 125, 128]

cp's OEIS Frontend

A155498 Number of odd digits in the concatenation of first n primes.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	7
7	9
8	11
9	12
10	13
11	15
12	17
13	18
14	19
15	20
16	22
17	24
18	25
19	26
20	28
21	30
22	32
23	33
24	34
25	36
26	38
27	40
28	42
29	44
30	47
31	49
32	52
33	55
34	58
35	60
36	63
37	66
38	68
39	70
40	73
41	76
42	78
43	81
44	84
45	87
46	90
47	92
48	93
49	94
50	95
51	97
52	99
53	100
54	102
55	104
56	105
57	106
58	108
59	110
60	111
61	112
62	114
63	116
64	119
65	122
66	125
67	128

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	7
7	9
8	11
9	12
10	13
11	15
12	17
13	18
14	19
15	20
16	22
17	24
18	25
19	26
20	28
21	30
22	32
23	33
24	34
25	36
26	38
27	40
28	42
29	44
30	47
31	49
32	52
33	55
34	58
35	60
36	63
37	66
38	68
39	70
40	73
41	76
42	78
43	81
44	84
45	87
46	90
47	92
48	93
49	94
50	95
51	97
52	99
53	100
54	102
55	104
56	105
57	106
58	108
59	110
60	111
61	112
62	114
63	116
64	119
65	122
66	125
67	128

n	a(n)
1	0
2	1
3	2
4	3
5	5
6	7
7	9
8	11
9	12
10	13
11	15
12	17
13	18
14	19
15	20
16	22
17	24
18	25
19	26
20	28
21	30
22	32
23	33
24	34
25	36
26	38
27	40
28	42
29	44
30	47
31	49
32	52
33	55
34	58
35	60
36	63
37	66
38	68
39	70
40	73
41	76
42	78
43	81
44	84
45	87
46	90
47	92
48	93
49	94
50	95
51	97
52	99
53	100
54	102
55	104
56	105
57	106
58	108
59	110
60	111
61	112
62	114
63	116
64	119
65	122
66	125
67	128