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A134585 as a simple table

na(n)
121
2221
32221
45461
522221
6222221
7640204
8960306
9904186
102222221
1122222221
1258873535
13222222221
142222222221
159367217930
166652125007
178419783524
188315731222
199908590176
2022222222221
21222222222221
22483200160032

[21,221,2221,5461,22221,222221,640204,960306,
 904186,2222221,22222221,58873535,222222221,
 2222222221,9367217930,6652125007,8419783524,
 8315731222,9908590176,22222222221,222222222221,
 483200160032]