A072998 - cp's OEIS frontend

A072998 To get a(n), write n in balanced ternary notation (using only digits -1, 0, 1, -1), then change -1's to 0's, 0's to 1's, and 1's to 2's.

n	a(n)
0	1
1	2
2	20
3	21
4	22
5	200
6	201
7	202
8	210
9	211
10	212
11	220
12	221
13	222
14	2000
15	2001
16	2002
17	2010
18	2011
19	2012
20	2020
21	2021
22	2022
23	2100
24	2101
25	2102
26	2110
27	2111
28	2112
29	2120
30	2121
31	2122
32	2200
33	2201
34	2202
35	2210
36	2211
37	2212
38	2220
39	2221
40	2222
41	20000
42	20001
43	20002
44	20010

[1, 2, 20, 21, 22, 200, 201, 202, 210, 211, 212, 220, 221, 222, 2000, 2001, 2002, 2010, 2011, 2012, 2020, 2021, 2022, 2100, 2101, 2102, 2110, 2111, 2112, 2120, 2121, 2122, 2200, 2201, 2202, 2210, 2211, 2212, 2220, 2221, 2222, 20000, 20001, 20002, 20010]

cp's OEIS Frontend

A072998 To get a(n), write n in balanced ternary notation (using only digits -1, 0, 1, -1), then change -1's to 0's, 0's to 1's, and 1's to 2's.

Table of values

List of values