A178028 - OEIS

A178028 as a simple table

n	a(n)
1	1
2	2
3	3
4	9
5	27
6	33
7	99
8	123
9	271
10	333
11	351
12	407
13	429
14	481
15	693
16	777
17	819
18	999
19	2151
20	3333
21	4521
22	7227
23	7373
24	9999
25	33333
26	81819
27	99999
28	194841
29	326733
30	333333
31	340067
32	366337
33	369963
34	386139
35	389961
36	437229
37	534391
38	623763
39	706293
40	762377
41	863247

[1,2,3,9,27,33,99,123,271,333,351,407,429,481,693, 777,819,999,2151,3333,4521,7227,7373,9999,33333, 81819,99999,194841,326733,333333,340067,366337, 369963,386139,389961,437229,534391,623763,706293, 762377,863247]