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A074860 as a simple table

na(n)
01
11
21
33
45
59
617
731
8111
9195
10319
111021
122525
134639
1411092
1525708
1664083
17173846
18292644
19979061
202073724
212680995
227115676
2317380240
2430136219
2541109707
26136581181
27298634398
28550610143
291625232666
302859685613
319863026929
3219691221772
3332153295043

[1,1,1,3,5,9,17,31,111,195,319,1021,2525,4639,
 11092,25708,64083,173846,292644,979061,2073724,
 2680995,7115676,17380240,30136219,41109707,
 136581181,298634398,550610143,1625232666,
 2859685613,9863026929,19691221772,32153295043]