A130224 - cp's OEIS frontend

A130224 a(1) = 1; a(n) = a(n-1) + (number of times the digit 1 has appeared in the sequence so far).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	12
12	15
13	19
14	24
15	29
16	34
17	39
18	44
19	49
20	54
21	59
22	64
23	69
24	74
25	79
26	84
27	89
28	94
29	99
30	104
31	110
32	118
33	128
34	139
35	151
36	165
37	180
38	196
39	213
40	231
41	250
42	269
43	288
44	307
45	326
46	345
47	364
48	383
49	402
50	421
51	441
52	462

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 19, 24, 29, 34, 39, 44, 49, 54, 59, 64, 69, 74, 79, 84, 89, 94, 99, 104, 110, 118, 128, 139, 151, 165, 180, 196, 213, 231, 250, 269, 288, 307, 326, 345, 364, 383, 402, 421, 441, 462]

cp's OEIS Frontend

A130224 a(1) = 1; a(n) = a(n-1) + (number of times the digit 1 has appeared in the sequence so far).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	12
12	15
13	19
14	24
15	29
16	34
17	39
18	44
19	49
20	54
21	59
22	64
23	69
24	74
25	79
26	84
27	89
28	94
29	99
30	104
31	110
32	118
33	128
34	139
35	151
36	165
37	180
38	196
39	213
40	231
41	250
42	269
43	288
44	307
45	326
46	345
47	364
48	383
49	402
50	421
51	441
52	462

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	12
12	15
13	19
14	24
15	29
16	34
17	39
18	44
19	49
20	54
21	59
22	64
23	69
24	74
25	79
26	84
27	89
28	94
29	99
30	104
31	110
32	118
33	128
34	139
35	151
36	165
37	180
38	196
39	213
40	231
41	250
42	269
43	288
44	307
45	326
46	345
47	364
48	383
49	402
50	421
51	441
52	462

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	12
12	15
13	19
14	24
15	29
16	34
17	39
18	44
19	49
20	54
21	59
22	64
23	69
24	74
25	79
26	84
27	89
28	94
29	99
30	104
31	110
32	118
33	128
34	139
35	151
36	165
37	180
38	196
39	213
40	231
41	250
42	269
43	288
44	307
45	326
46	345
47	364
48	383
49	402
50	421
51	441
52	462