A302687 - cp's OEIS frontend

A302687 a(1) = 1; a(2) = 2; then a(n) is the smallest number > a(n-1) such that a(n) divides concat(a(1), a(2), ..., a(n-1)).

n	a(n)
1	1
2	2
3	3
4	41
5	43
6	129
7	9567001
8	21147541
9	22662659
10	23817877
11	24837187
12	28850377
13	28872229
14	37916473
15	48749751
16	70416307
17	439229167
18	834385607
19	2270365163
20	2278377431
21	3751789547
22	4433933101
23	4810754611
24	14432263833
25	15632412757
26	30530543651
27	42441819717
28	65591903199
29	65857498407

[1, 2, 3, 41, 43, 129, 9567001, 21147541, 22662659, 23817877, 24837187, 28850377, 28872229, 37916473, 48749751, 70416307, 439229167, 834385607, 2270365163, 2278377431, 3751789547, 4433933101, 4810754611, 14432263833, 15632412757, 30530543651, 42441819717, 65591903199, 65857498407]

cp's OEIS Frontend

A302687 a(1) = 1; a(2) = 2; then a(n) is the smallest number > a(n-1) such that a(n) divides concat(a(1), a(2), ..., a(n-1)).

Table of values

List of values