A248378 - cp's OEIS frontend

A248378 a(2n) = concatenation of n+1 with n+2, a(2n+1) = concatenation of n+2 with n+1.

n	a(n)
0	12
1	21
2	23
3	32
4	34
5	43
6	45
7	54
8	56
9	65
10	67
11	76
12	78
13	87
14	89
15	98
16	910
17	109
18	1011
19	1110
20	1112
21	1211
22	1213
23	1312
24	1314
25	1413
26	1415
27	1514
28	1516
29	1615
30	1617
31	1716
32	1718
33	1817
34	1819
35	1918
36	1920
37	2019
38	2021
39	2120
40	2122
41	2221
42	2223
43	2322
44	2324
45	2423
46	2425
47	2524
48	2526

[12, 21, 23, 32, 34, 43, 45, 54, 56, 65, 67, 76, 78, 87, 89, 98, 910, 109, 1011, 1110, 1112, 1211, 1213, 1312, 1314, 1413, 1415, 1514, 1516, 1615, 1617, 1716, 1718, 1817, 1819, 1918, 1920, 2019, 2021, 2120, 2122, 2221, 2223, 2322, 2324, 2423, 2425, 2524, 2526]

cp's OEIS Frontend

A248378 a(2n) = concatenation of n+1 with n+2, a(2n+1) = concatenation of n+2 with n+1.

Table of values

List of values