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A068149 as a simple table

na(n)
10
21
33
46
510
621
745
855
966
1078
11210
12666
13990
142211
153321
165565
176555
188778
1910011
2090100
21112101
22222111
23232221
24443211
25887778
265433456
275456556
285656566
295676765
3022221111
3122321221
3234565455
3388877778
34211099878
35212210901

[0,1,3,6,10,21,45,55,66,78,210,666,990,2211,3321,
 5565,6555,8778,10011,90100,112101,222111,232221,
 443211,887778,5433456,5456556,5656566,5676765,
 22221111,22321221,34565455,88877778,211099878,
 212210901]