A088877 - cp's OEIS frontend

A088877 Numbers k that are divisors of the number formed by concatenating (k-1), k and (k+1), in that order.

n	a(n)
1	1
2	3
3	9
4	11
5	33
6	111
7	117
8	143
9	189
10	231
11	259
12	273
13	297
14	333
15	351
16	407
17	429
18	481
19	693
20	777
21	819
22	1111
23	1233
24	1507
25	2409
26	3333
27	4521
28	7227
29	7373
30	11111
31	26829
32	27273
33	33333
34	81819
35	100899
36	101101
37	108911
38	111111
39	123321
40	128713
41	129987
42	142857

[1, 3, 9, 11, 33, 111, 117, 143, 189, 231, 259, 273, 297, 333, 351, 407, 429, 481, 693, 777, 819, 1111, 1233, 1507, 2409, 3333, 4521, 7227, 7373, 11111, 26829, 27273, 33333, 81819, 100899, 101101, 108911, 111111, 123321, 128713, 129987, 142857]

cp's OEIS Frontend

A088877 Numbers k that are divisors of the number formed by concatenating (k-1), k and (k+1), in that order.

Table of values

List of values