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A184299 as a simple table

na(n)
11
21
31
42
51
611
721
8167
9616
102308
117792
1242090
13164290
14733278
152785855
1613613231
1754109235
18230492863
19899895753
203997708404
2116033421220

[1,1,1,2,1,11,21,167,616,2308,7792,42090,164290,
 733278,2785855,13613231,54109235,230492863,
 899895753,3997708404,16033421220]