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A337855 as a simple table

na(n)
10
22
318
4180
51800
618000
7180000
81800000
918000000
10180000000
111800000000
1218000000000
13180000000000
141800000000000
1518000000000000
16180000000000000
171800000000000000
1818000000000000000
19180000000000000000
201800000000000000000
2118000000000000000000
22180000000000000000000

[0,2,18,180,1800,18000,180000,1800000,18000000,
 180000000,1800000000,18000000000,180000000000,
 1800000000000,18000000000000,180000000000000,
 1800000000000000,18000000000000000,
 180000000000000000,1800000000000000000,
 18000000000000000000,180000000000000000000]