A099994 - OEIS

A099994 as a simple table

n	a(n)
1	0
2	2
3	4
4	6
5	8
6	11
7	33
8	55
9	77
10	99
11	111
12	131
13	151
14	171
15	191
16	212
17	232
18	252
19	272
20	292
21	313
22	333
23	353
24	373
25	393
26	414
27	434
28	454
29	474
30	494
31	515
32	535
33	555
34	575
35	595
36	616
37	636
38	656
39	676
40	696
41	717
42	737
43	757
44	777
45	797
46	818
47	838
48	858
49	878
50	898
51	919
52	939
53	959
54	979
55	999
56	1111
57	1331
58	1551
59	1771
60	1991

[0,2,4,6,8,11,33,55,77,99,111,131,151,171,191,212, 232,252,272,292,313,333,353,373,393,414,434,454, 474,494,515,535,555,575,595,616,636,656,676,696, 717,737,757,777,797,818,838,858,878,898,919,939, 959,979,999,1111,1331,1551,1771,1991]