A250747 - cp's OEIS frontend

A250747 Start with a(0) = 0; then a(n) = smallest number not already in the sequence such that a(n) divides concat(a(n), a(n-1), ..., a(0)).

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	10
6	6
7	9
8	13
9	26
10	15
11	18
12	30
13	431
14	73
15	67
16	134
17	7
18	14
19	21
20	35
21	29
22	58
23	127
24	27
25	39
26	43
27	70
28	11
29	22
30	19
31	38
32	95
33	190
34	2748070932534311
35	2768821759897
36	5537643519794
37	787
38	191
39	382
40	955
41	17
42	31
43	45
44	54
45	90
46	101
47	202
48	303
49	57
50	114
51	47
52	55
53	33
54	66

[0, 1, 2, 3, 5, 10, 6, 9, 13, 26, 15, 18, 30, 431, 73, 67, 134, 7, 14, 21, 35, 29, 58, 127, 27, 39, 43, 70, 11, 22, 19, 38, 95, 190, 2748070932534311, 2768821759897, 5537643519794, 787, 191, 382, 955, 17, 31, 45, 54, 90, 101, 202, 303, 57, 114, 47, 55, 33, 66]

cp's OEIS Frontend

A250747 Start with a(0) = 0; then a(n) = smallest number not already in the sequence such that a(n) divides concat(a(n), a(n-1), ..., a(0)).

Table of values

List of values