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A189912 as a simple table

na(n)
01
12
24
310
425
566
6177
7484
81339
93742
1010538
1129866
1285087
13243478
14699324
152015082
165822619
1716865718
1848958404
19142390542
20414837699
211210439958
223536809521
2310347314544
2430306977757
2588861597426
26260798283502
27766092871654
282252240916665

[1,2,4,10,25,66,177,484,1339,3742,10538,29866,
 85087,243478,699324,2015082,5822619,16865718,
 48958404,142390542,414837699,1210439958,
 3536809521,10347314544,30306977757,88861597426,
 260798283502,766092871654,2252240916665]