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A029868 as a simple table

na(n)
51
61
74
814
946
10145
11440
121315
133877
1411315
1532792
1694529
17271510
18777764
192223865
206350657
2118120730
2251680249
23147359335
24420163711
251198151432
263417475326
279750708533
2827831153091
2979471338455
30227032777454
31648896436944
321855571389651
335308837191604

[1,1,4,14,46,145,440,1315,3877,11315,32792,94529,
 271510,777764,2223865,6350657,18120730,51680249,
 147359335,420163711,1198151432,3417475326,
 9750708533,27831153091,79471338455,227032777454,
 648896436944,1855571389651,5308837191604]