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A181236 as a simple table

na(n)
12
22
34
42
58
614
72
822
9182
10140
112
1272
133362
1449772
154322
162
17254
1869302
1933235358
20113400002
21434542
222
23926
241513514
2527896484332
265210265060002
274027811102702
28144109562
292
303434
3134306274
3226012734507190
33298289608088472002

[2,2,4,2,8,14,2,22,182,140,2,72,3362,49772,4322,2,
 254,69302,33235358,113400002,434542,2,926,1513514,
 27896484332,5210265060002,4027811102702,144109562,
 2,3434,34306274,26012734507190,298289608088472002]