A231922 - cp's OEIS frontend

A231922 Working in base 4: a(0)=0, thereafter a(n+1) is the smallest number not already in the sequence such that the bits of a(n) and a(n+1) together can be rearranged to form a palindrome.

n	a(n)
0	0
1	11
2	1
3	10
4	100
5	12
6	2
7	20
8	101
9	22
10	3
11	13
12	31
13	103
14	30
15	110
16	33
17	111
18	21
19	102
20	120
21	201
22	210
23	1000
24	122
25	133
26	212
27	221
28	313
29	331
30	1001
31	112
32	23
33	32
34	113
35	131
36	223
37	232
38	300
39	311
40	322
41	333
42	1003
43	123
44	132
45	213
46	231
47	312
48	321
49	1002
50	121
51	200
52	211
53	222
54	233
55	323
56	332

[0, 11, 1, 10, 100, 12, 2, 20, 101, 22, 3, 13, 31, 103, 30, 110, 33, 111, 21, 102, 120, 201, 210, 1000, 122, 133, 212, 221, 313, 331, 1001, 112, 23, 32, 113, 131, 223, 232, 300, 311, 322, 333, 1003, 123, 132, 213, 231, 312, 321, 1002, 121, 200, 211, 222, 233, 323, 332]

cp's OEIS Frontend

A231922 Working in base 4: a(0)=0, thereafter a(n+1) is the smallest number not already in the sequence such that the bits of a(n) and a(n+1) together can be rearranged to form a palindrome.

Table of values

List of values