A369127 - cp's OEIS frontend

A369127 S is a "boomerang sequence". Replace each digit d of S by a base-10 palindrome not yet used that contains d: the sequence S remains identical to itself if we follow each palindrome with a comma.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	11
12	101
13	111
14	202
15	121
16	131
17	141
18	151
19	22
20	303
21	212
22	161
23	222
24	171
25	181
26	33
27	191
28	313
29	44
30	414
31	515
32	55
33	616
34	232
35	242
36	323
37	404
38	333
39	252
40	717
41	262
42	818
43	66
44	919
45	272
46	282
47	292
48	1001
49	77
50	1111
51	1221
52	88
53	1331
54	343
55	353
56	1441
57	99

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 101, 111, 202, 121, 131, 141, 151, 22, 303, 212, 161, 222, 171, 181, 33, 191, 313, 44, 414, 515, 55, 616, 232, 242, 323, 404, 333, 252, 717, 262, 818, 66, 919, 272, 282, 292, 1001, 77, 1111, 1221, 88, 1331, 343, 353, 1441, 99]

cp's OEIS Frontend

A369127 S is a "boomerang sequence". Replace each digit d of S by a base-10 palindrome not yet used that contains d: the sequence S remains identical to itself if we follow each palindrome with a comma.

Table of values

List of values