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A198628 as a simple table

na(n)
01
13
215
381
4435
52313
612195
763801
8331395
91710153
108775075
1144808921
12227890755
131155180393
145839846755
1529458152441
16148335904515
17745888593033
183746364947235
1918799770158361
2094271405748675
21472449569948073
222366624981836515
2311850654345690681
2459323452211439235

[1,3,15,81,435,2313,12195,63801,331395,1710153,
 8775075,44808921,227890755,1155180393,5839846755,
 29458152441,148335904515,745888593033,
 3746364947235,18799770158361,94271405748675,
 472449569948073,2366624981836515,
 11850654345690681,59323452211439235]