A061972 - cp's OEIS frontend

A061972 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 19 (most significant digit on right).

n	a(n)
1	1
2	3
3	9
4	27
5	33
6	36
7	81
8	183
9	223
10	261
11	263
12	351
13	585
14	1035
15	1092
16	1173
17	1732
18	2235
19	2628
20	3492
21	8577
22	11592
23	13617
24	15663
25	20664
26	20709
27	23333
28	25848
29	52689
30	67608
31	334536
32	837112
33	2765341
34	5319444

[1, 3, 9, 27, 33, 36, 81, 183, 223, 261, 263, 351, 585, 1035, 1092, 1173, 1732, 2235, 2628, 3492, 8577, 11592, 13617, 15663, 20664, 20709, 23333, 25848, 52689, 67608, 334536, 837112, 2765341, 5319444]

cp's OEIS Frontend

A061972 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 19 (most significant digit on right).

Table of values

List of values