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A019473 as a simple table

na(n)
10
20
30
42
51
65
74
89
910
1025
1146
12121
13240
14619
151353
163286
177773
1819044
1945759
20112243
21273188
22672172
231646147
244051732
259971377
2624619307
2760823008
28150613157
29373188952
30926068847
312299616637
325716948683
3314223867298
3435422864104

[0,0,0,2,1,5,4,9,10,25,46,121,240,619,1353,3286,
 7773,19044,45759,112243,273188,672172,1646147,
 4051732,9971377,24619307,60823008,150613157,
 373188952,926068847,2299616637,5716948683,
 14223867298,35422864104]