A089604 - cp's OEIS frontend

A089604 "3-lazy binary" representation of n: to increment, add one to the last digit, then "carry" the rightmost 3 (replace 03->11, 13->21, or 23->31).

n	a(n)
0	0
1	1
2	2
3	11
4	12
5	21
6	22
7	31
8	112
9	121
10	122
11	131
12	212
13	213
14	222
15	231
16	312
17	321
18	1122
19	1131
20	1212
21	1221
22	1222
23	1231
24	1312
25	1321
26	2122
27	2131
28	2212
29	2221
30	2222
31	2231
32	2312
33	2321
34	3122
35	3131
36	3212
37	3221
38	11222

[0, 1, 2, 11, 12, 21, 22, 31, 112, 121, 122, 131, 212, 213, 222, 231, 312, 321, 1122, 1131, 1212, 1221, 1222, 1231, 1312, 1321, 2122, 2131, 2212, 2221, 2222, 2231, 2312, 2321, 3122, 3131, 3212, 3221, 11222]

cp's OEIS Frontend

A089604 "3-lazy binary" representation of n: to increment, add one to the last digit, then "carry" the rightmost 3 (replace 03->11, 13->21, or 23->31).

Table of values

List of values