A061681 - cp's OEIS frontend

A061681 a(0)=1; a(n) = a(n-1) + lead(a(n-1)) for n > 0 where for an integer x lead(x) is the leading digit in base 10.

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	17
6	18
7	19
8	20
9	22
10	24
11	26
12	28
13	30
14	33
15	36
16	39
17	42
18	46
19	50
20	55
21	60
22	66
23	72
24	79
25	86
26	94
27	103
28	104
29	105
30	106
31	107
32	108
33	109
34	110
35	111
36	112
37	113
38	114
39	115
40	116
41	117
42	118
43	119
44	120
45	121
46	122
47	123
48	124
49	125
50	126
51	127
52	128
53	129
54	130
55	131
56	132
57	133
58	134

[1, 2, 4, 8, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 33, 36, 39, 42, 46, 50, 55, 60, 66, 72, 79, 86, 94, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134]

cp's OEIS Frontend

A061681 a(0)=1; a(n) = a(n-1) + lead(a(n-1)) for n > 0 where for an integer x lead(x) is the leading digit in base 10.

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	17
6	18
7	19
8	20
9	22
10	24
11	26
12	28
13	30
14	33
15	36
16	39
17	42
18	46
19	50
20	55
21	60
22	66
23	72
24	79
25	86
26	94
27	103
28	104
29	105
30	106
31	107
32	108
33	109
34	110
35	111
36	112
37	113
38	114
39	115
40	116
41	117
42	118
43	119
44	120
45	121
46	122
47	123
48	124
49	125
50	126
51	127
52	128
53	129
54	130
55	131
56	132
57	133
58	134

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	17
6	18
7	19
8	20
9	22
10	24
11	26
12	28
13	30
14	33
15	36
16	39
17	42
18	46
19	50
20	55
21	60
22	66
23	72
24	79
25	86
26	94
27	103
28	104
29	105
30	106
31	107
32	108
33	109
34	110
35	111
36	112
37	113
38	114
39	115
40	116
41	117
42	118
43	119
44	120
45	121
46	122
47	123
48	124
49	125
50	126
51	127
52	128
53	129
54	130
55	131
56	132
57	133
58	134

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	17
6	18
7	19
8	20
9	22
10	24
11	26
12	28
13	30
14	33
15	36
16	39
17	42
18	46
19	50
20	55
21	60
22	66
23	72
24	79
25	86
26	94
27	103
28	104
29	105
30	106
31	107
32	108
33	109
34	110
35	111
36	112
37	113
38	114
39	115
40	116
41	117
42	118
43	119
44	120
45	121
46	122
47	123
48	124
49	125
50	126
51	127
52	128
53	129
54	130
55	131
56	132
57	133
58	134