A209880 - OEIS

A209880 as a simple table

n	a(n)
1	29
2	112
3	233
4	556
5	1112
6	2233
7	5555
8	1111
9	2222
10	4444
11	8888
12	16777
13	34589
14	112333
15	444455
16	889999
17	1788899
18	1177777
19	4558889
20	13444447
21	77888888
22	156667777
23	233444489
24	1112278888
25	11999
26	11119
27	1223
28	4444
29	8888
30	16777
31	34589
32	112333
33	444455
34	889999
35	1788899

[29,112,233,556,1112,2233,5555,1111,2222,4444, 8888,16777,34589,112333,444455,889999,1788899, 1177777,4558889,13444447,77888888,156667777, 233444489,1112278888,11999,11119,1223,4444,8888, 16777,34589,112333,444455,889999,1788899]