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A308708 as a simple table

na(n)
15
26
38
49
514
615
736
862
992
10101
11173
12192
13211
14888
151001
163543
1710001
18100001
19110011
20146796
211000001
2210000001
23100000001
241000000001
2510000000001

[5,6,8,9,14,15,36,62,92,101,173,192,211,888,1001,
 3543,10001,100001,110011,146796,1000001,10000001,
 100000001,1000000001,10000000001]