A249009 - cp's OEIS frontend

A249009 a(n+1) gives the number of occurrences of the first digit of a(n) so far, up to and including a(n), with a(0)=0.

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	3
6	1
7	4
8	1
9	5
10	1
11	6
12	1
13	7
14	1
15	8
16	1
17	9
18	1
19	10
20	11
21	13
22	14
23	15
24	16
25	17
26	18
27	19
28	20
29	2
30	3
31	3
32	4
33	3
34	5
35	3
36	6
37	3
38	7
39	3
40	8
41	3
42	9
43	3
44	10
45	21
46	4
47	4
48	5
49	4
50	6
51	4
52	7
53	4
54	8
55	4
56	9
57	4
58	10
59	23
60	5
61	5
62	6
63	5
64	7
65	5
66	8
67	5
68	9
69	5
70	10
71	24
72	6
73	6
74	7
75	6
76	8
77	6
78	9
79	6
80	10

[0, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 1, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 2, 3, 3, 4, 3, 5, 3, 6, 3, 7, 3, 8, 3, 9, 3, 10, 21, 4, 4, 5, 4, 6, 4, 7, 4, 8, 4, 9, 4, 10, 23, 5, 5, 6, 5, 7, 5, 8, 5, 9, 5, 10, 24, 6, 6, 7, 6, 8, 6, 9, 6, 10]

cp's OEIS Frontend

A249009 a(n+1) gives the number of occurrences of the first digit of a(n) so far, up to and including a(n), with a(0)=0.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	3
6	1
7	4
8	1
9	5
10	1
11	6
12	1
13	7
14	1
15	8
16	1
17	9
18	1
19	10
20	11
21	13
22	14
23	15
24	16
25	17
26	18
27	19
28	20
29	2
30	3
31	3
32	4
33	3
34	5
35	3
36	6
37	3
38	7
39	3
40	8
41	3
42	9
43	3
44	10
45	21
46	4
47	4
48	5
49	4
50	6
51	4
52	7
53	4
54	8
55	4
56	9
57	4
58	10
59	23
60	5
61	5
62	6
63	5
64	7
65	5
66	8
67	5
68	9
69	5
70	10
71	24
72	6
73	6
74	7
75	6
76	8
77	6
78	9
79	6
80	10

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	3
6	1
7	4
8	1
9	5
10	1
11	6
12	1
13	7
14	1
15	8
16	1
17	9
18	1
19	10
20	11
21	13
22	14
23	15
24	16
25	17
26	18
27	19
28	20
29	2
30	3
31	3
32	4
33	3
34	5
35	3
36	6
37	3
38	7
39	3
40	8
41	3
42	9
43	3
44	10
45	21
46	4
47	4
48	5
49	4
50	6
51	4
52	7
53	4
54	8
55	4
56	9
57	4
58	10
59	23
60	5
61	5
62	6
63	5
64	7
65	5
66	8
67	5
68	9
69	5
70	10
71	24
72	6
73	6
74	7
75	6
76	8
77	6
78	9
79	6
80	10

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	3
6	1
7	4
8	1
9	5
10	1
11	6
12	1
13	7
14	1
15	8
16	1
17	9
18	1
19	10
20	11
21	13
22	14
23	15
24	16
25	17
26	18
27	19
28	20
29	2
30	3
31	3
32	4
33	3
34	5
35	3
36	6
37	3
38	7
39	3
40	8
41	3
42	9
43	3
44	10
45	21
46	4
47	4
48	5
49	4
50	6
51	4
52	7
53	4
54	8
55	4
56	9
57	4
58	10
59	23
60	5
61	5
62	6
63	5
64	7
65	5
66	8
67	5
68	9
69	5
70	10
71	24
72	6
73	6
74	7
75	6
76	8
77	6
78	9
79	6
80	10