A030149 - OEIS

A030149 as a simple table

n	a(n)
1	0
2	2
3	4
4	6
5	8
6	212
7	232
8	252
9	272
10	292
11	414
12	434
13	454
14	474
15	494
16	616
17	636
18	656
19	676
20	696
21	818
22	838
23	858
24	878
25	898
26	21012
27	21212
28	21412
29	21612
30	21812
31	23032
32	23232
33	23432
34	23632
35	23832
36	25052
37	25252
38	25452
39	25652
40	25852
41	27072
42	27272
43	27472

[0,2,4,6,8,212,232,252,272,292,414,434,454,474, 494,616,636,656,676,696,818,838,858,878,898,21012, 21212,21412,21612,21812,23032,23232,23432,23632, 23832,25052,25252,25452,25652,25852,27072,27272, 27472]