A039408 - OEIS

A039408 as a simple table

n	a(n)
1	18
2	81
3	108
4	128
5	138
6	148
7	158
8	168
9	178
10	180
11	182
12	183
13	184
14	185
15	186
16	187
17	189
18	198
19	218
20	281
21	318
22	381
23	418
24	481
25	518
26	581
27	618
28	681
29	718
30	781
31	801
32	810
33	812
34	813
35	814
36	815
37	816
38	817
39	819
40	821
41	831
42	841
43	851
44	861
45	871
46	891
47	918
48	981
49	1008
50	1028

[18,81,108,128,138,148,158,168,178,180,182,183, 184,185,186,187,189,198,218,281,318,381,418,481, 518,581,618,681,718,781,801,810,812,813,814,815, 816,817,819,821,831,841,851,861,871,891,918,981, 1008,1028]